r/theydidthemath Jun 30 '22 Wholesome 17 Helpful 7 Silver 12

One 9 inch pizza vs two 5 inch pizzas

73.1k Upvotes

5.3k

u/soundoftherain Jun 30 '22 edited Jul 01 '22 Silver Platinum Helpful Wholesome Starry Eureka!

Tip: To quickly compare pizza sizes in your head, you can ignore the π (since it cancels out).

For example 5² = 25, 9²=81. Since 25*3=75 < 81 < 25*4=100, a 9 inch pizza is between 3 and 4 5-inch pizzas (same result as the picture).

EDIT: Regarding using diameter vs radius: It doesn't matter which you use because it's a constant and cancels out when you compare them. If you use diameter, the 1/4th cancels out (another equation for area is A=1/4*π*d²).

1.6k

u/Traditional-Ad3161 Jun 30 '22

I was scrolling for this comment, thanks.

My wife thinks I'm some sort of genius because I can immediately calculate roughly how many pizzas of one size = one pizza of a bigger size.

But it's pretty easy, especially if you have all of your squares memorized.

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u/Roxxerr Jun 30 '22 Silver

How many times a day do you calculate pizza sizes? You write it as if you do it all day long 🙂

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u/maximumtesticle Jun 30 '22 Helpful Wholesome All-Seeing Upvote

He meant to write penis, not pizza.

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u/its_a_gibibyte Jun 30 '22 Helpful

If my husband has a penis of 2 inch diameter and a length of 8 inches, how many penises of 1 inch diameter/5 inch length must I fill myself with to achieve the same total inserted penile volume?

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u/Epicmonk117 Jun 30 '22 edited Jun 30 '22 Silver Helpful Wholesome

Your husband has a penile volume of 8pi. The smaller penises have a penile volume of 1.25pi. Therefore, you need 6.4 of the smaller penises to equal your husband’s penis.

You should probably just ride your husband’s penis anyway. A single, larger penis is generally more pleasurable than multiple smaller penises, even if the total volume of penis is the same. Plus, it’s a good bonding experience for the two of you.

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u/A_Bad_Rolemodel Jun 30 '22

That isn't even taking into the account of getting 6.4 different men to coordinate their dicks all into one hole. Just the the body size of people would make it quite the challenge. But I would watch the video.

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u/ARCHON1284 Jun 30 '22

Where does one sign up to be one of the 6.4 different men?

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u/RCascanbe Jun 30 '22 Silver Take My Energy

You can be the 0.4

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u/Bulky-Yam4206 Jun 30 '22

I think they’ve managed 3 in one hole for porn before, but I’m no expert and I’d never stoop to watching porn -cough- ahem… anyway…

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u/Johnny_Freedoom Jun 30 '22

Oh my god, that's disgusting? Where?

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u/sephresx Jul 01 '22

We need the link, so we know not to watch it.

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u/RektMan Jun 30 '22 edited Jul 01 '22 Silver

Imagine a woman laying down on the X axis, now imagine a plane on the Y axis perpendicular to the female body and starting at the point of penile contact. Now imagine the woman bending her legs in a manner that doesn't take space away from the other side of the y axis. Now we are going to assume the full 5 inches are connected into the woman. For our best chance scenario, we will use 6 perfectly slim men, and will use 35 inches as the average hip size, so pi(r)2 = 35 means the side view measurement of these males is of 3.34 in approx. (edit) im retarded, this should be double, 6.68 in

We now imagine a line of 6.68 in inches protruding from our contact point, outwards and will now apply the formula for the volume of half a sphere (2/3) pi * r . This is our space constraint because all male hips need to be within the confines of the sphere in order for the penis to be FULLY inserted.

Anyways my office hours are up so i gotta go enjoy my freedom. This will be continued later.

I think we could use some 3d modeling software to determine the poses required IF ITS EVEN POSSIBLE, for all 5 males to perform this feat.

Edit2: as some of my contemporaries point out, we need to address the 40% of a man part of the problem. And although solutions such as compensation on the size of dicks would be an easy fix for the extra 40% dick i feel it would be invalid because the original question explicitly sets the size of penis to be used for the task.

I figure that since this is hypothetical, i can make as many assumptions as i want to prove my point even if its very niche.

So we can further assume that the scenario takes place in 1787 united states. Its the only time in history where i can think of a human being recognized by law as a fraction. It was the year of the 3/5 compromise, where the us constitution determined by law that a slave was worth 3/5 of a free man. So now we can either follow the rules of men or the rules of the universe.

If we follow the rules of men, we can have 4 slaves and 4 free men, for a combined 6.4 in of penis in accordance to the U.S. constitution. However, the rules that govern our reality dictate that it would be 8 penii. Because there is no such thing as 3/5 of a human.

I think the alternative correct answer to the original question is that there is no way to achieve the same total inserted penile volume with the given penis dimensions. The other correct answer being 6.4 and thats a maybe, because if we can prove that any number less than or equal to 6 men do not fit in the space given then we can declare 6.4 to be wrong. And for this to be non-debatable we should instead use the smallest recorded side view width size of the human male recorded.

Edit3: >six adjacent cylinders have a convex hull volume far more than six times their individual volumes, because of packing voids.

And so to deal with the above comment, we will have to complicate things further for the sake of accuracy. We have to remember that our human bodies are actually elastic solid bodies so we have to organize 6 bodies in such a way that we reduce packing voids. Then we can assign regular shapes to our irregular shaped convex hull model to have the most accurate volume of our men since using 6 cylinders is too vague.

Also the exercise im proposing was too simplified because im only using 2 reference points to imagine a half sphere for my space constraint, and i cant find the words to describe the shape required, a mix between a rotational ellipsoid. At this point its better to just draw this.

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u/annie_bean Jun 30 '22

I'd rather just assume a spherical cow and see how the night plays out

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u/mlong2001 Jun 30 '22

Username checks out

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u/Kabuto_ghost Jun 30 '22

Tip: To quickly compare penis sizes in your head, you can ignore the π (since it cancels out).

For example 5² = 25, 9²=81. Since 253=75 < 81 < 254=100, a 9 inch penis is between 3 and 4 5-inch penises (same result as the picture).

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u/KingsConsent Jul 01 '22

Damns this is sooo much better than the one about pizza

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u/Traditional-Ad3161 Jun 30 '22

Surprisingly frequently, but it's still not a very useful skill

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u/Feisty-Ad396 Jun 30 '22

Really you memorized all squares? Name all of them.

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u/Whiskey-Weather Jun 30 '22

Alright, they're all named Brad. You're welcome.

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u/gorka_la_pork Jun 30 '22

Doesn't that get confusing?

Me: "Hey Brad,"

Every square number at once: "Yo!"

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u/JoshuaPearce Jun 30 '22

No, because numbers don't talk.

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u/gorka_la_pork Jun 30 '22 edited Jun 30 '22

Sometimes numbers speak volumes. Like my BAC writing these comments at 4 in the afternoon.

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u/Hot_Goal4205 Jun 30 '22

You must hang out with a lot of squares

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u/Nole_in_ATX Jun 30 '22

I’m surrounded by Assholes Brads!

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u/Dunk546 Jun 30 '22

How to keep a savant occupied forever.

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u/SwissyVictory Jun 30 '22 edited Jul 01 '22

You can just make a naming system.

  • 0: A

  • 1: B

  • 2: C

  • 3: D

  • 4: E

  • 5: F

  • 6: G

  • 7: H

  • 8: I

  • 9: J

  • Negitive: O (Place before the number)

  • Decimal: U (place where the decimal is)

So 152 would be BF

-152 would be OBF

1.52 would be BUF

-1.52 would be OBUF

2927032 would be CJCHAD

All the squares are named with a unique name.

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u/drkalmenius Jul 01 '22

Found the computer scientist

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u/jahnybravo Jul 01 '22

I actually did that the other night while I was high and soaking in a bath. I thought up all the squares I already knew off the top of my head, calculated the next couple of them, and then would repeat the entire list but this time including the new ones, so that they would join the list of squares I could name off the top of my head. but also I was high so eventually I realized my music had stopped playing and wondered why the fuck was I sitting in silence doing math for no reason

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u/BrutusTheKat Jun 30 '22

It's a good starting point but it doesn't take into account the additional pizza lost to crust.

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u/DonaIdTrurnp Jul 01 '22

The radius of the pizza should exclude the crust.

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u/kdeaton06 Jul 01 '22

The diameter* of a pizza is measured by how wide they cut the raw dough. Actual cooked pizza is probably bigger because it expands a small amount.

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u/buster_de_beer Jul 01 '22

You mean the additional crust gained per pizza. I like crust.

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u/jules3001 Jun 30 '22 edited Jun 30 '22 Silver

That's a good point. Remember to compare the radius not the diameter. Should be comparing 2.5^2 and 4.5^2. Not gonna do the math on decimal values but the radius being half the diameter is important since we're dealing with squared values.

EDIT: Lots of replies so gonna use another example to make my point. Lets say the pizzas were 6 and 12 inches instead. If you use 6² and 12² you get 36 and 144. Ratio is 1 to 4. Then if you use the radius you get 3² and 6² so you get 9 and 36 which, wtf, is 1 to 4 so its the same. Nevermind, forget my point. Doesn't' matter if you use radius or diameter.

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u/nadrjones Jun 30 '22

the factor of 4 still cancels out also. So PI (d/2) squared or pi * (d squared) /4 for both sides, remove pi and the 4 and the ratios are still fine for guesstimation purposes.

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u/pelvark Jun 30 '22

The ratio between the numbers remain the same whether you divide by 2 or not.

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u/TheExtremistModerate 1✓ Jun 30 '22

Diameter vs. Radius doesn't matter.

πr2 = (π/4)d2

In either case, the constants cancel and you're left with r2 or d2 .

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u/DrZoidberg- Jun 30 '22

I'm left with a character of the Star wars universe? Math really is amazing

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u/TheExtremistModerate 1✓ Jun 30 '22

Math is amazing, and you artoo.

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u/B4-711 Jun 30 '22

confidentially incorrect

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u/spaceforcerecruit Jul 01 '22

I gotta give them props for doing the math to prove us wrong, realizing the math proved them wrong and owning it like a champ.

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u/JustHere2AskSometing Jun 30 '22

People in the 1960s: We will solve world peace by 2022

This guy: remember to compare the radius not the diameter for estimating pizza sizes

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u/Ashamed-Status-9668 Jun 30 '22

Lol I love how you reasoned it out.

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u/ih8meandu Jun 30 '22

wtf, its the same. Nevermind, forget my point.

Lol I appreciate this edit

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u/timmyboyoyo Jun 30 '22

Is big difference you can see just simple math!

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u/teakwood54 Jun 30 '22

Quick question: if you're ignoring the π (since it cancels out), how do you end up with any pizza pi?

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u/ydoiwantreddit Jun 30 '22

Use τ, so you can get twice as much π.

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u/SendAstronomy Jun 30 '22

Yeah, it should be a pizza τ, a pizza π would be only half.

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u/CrabbyBlueberry Jun 30 '22

This works for any two dimensional shape that is scaled by a factor of 9/5. For example, if you had two equilateral triangles, one with 9 inch sides and the other with 5 inch sides, the areas are 9*9*sqrt(3)/4 and 5*5*sqrt(3)/4. You can just cancel out the sqrt(3)/4 parts and still get a ratio of 81 to 25.

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u/FloppyEel Jun 30 '22

I'm fucking stupid, man 😔

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u/ExtentAcceptable1455 Jun 30 '22

In my experience with mini/microwave pizzas this is accurate. They will in most cases be thinner if they're a smaller diameter.

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u/soundoftherain Jun 30 '22

This math assumes that all pizza is the same thickness.

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u/reborngoat Jun 30 '22

We're assuming the idealized pizza which, according to physicists, is a sphere.

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u/sanguinesolitude Jun 30 '22

Italians hate this one weird trick.

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u/Seethi110 Jun 30 '22

Yupp! Always keep in mind 16in pizza is 4x the area of an 8in, and has a lower crust-to-area ratio (which is good or bad depending on how much you like the crust). But always good to keep this mind when buying a pizzas and comparing the price.

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u/sixrustyspoons Jun 30 '22 Silver Wholesome

9 out of 10 times I just buy the biggest pizza they have and get a few lunches out of dinner.

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u/WhiteHelljumper Jun 30 '22 Wholesome

I buy the biggest they have, eat it in one sitting, then lay down, hating myself.

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u/Amelaclya1 Jun 30 '22 Helpful

"Every pizza is a personal pizza if you try hard and believe in yourself"

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u/oofego Jun 30 '22

Dang I don't know.. there's a place by me that has 24" pizzas that you have to turn sideways to get it in the car.

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u/[deleted] Jun 30 '22

Believe in the you that believes you can do it.

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u/Peter_Hempton Jun 30 '22

Dang I don't know.. there's a place by me that has 24" pizzas that you have to turn sideways to get it in the car.

You, or the pizza.

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u/bitties Jun 30 '22

"I don't stop eating when I feel full, the meal isn't over when I'm full. It's over when I hate myself."

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u/markymark0123 Jul 01 '22

Not even then. The meal is over when the food is gone.

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u/SwimBrief Jun 30 '22

This is the way, some quick math shows you that a large pizza is typically an astronomically better value than a small or medium pizza, and pizza’s one of those foods that still tastes amazing reheated or cold!

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u/BeingRightAmbassador Jun 30 '22

Especially when it's 5% more for like 30% more pizza

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u/Th1s1sChr1s Jun 30 '22

This is the way

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u/NoLifeGamer2 Jun 30 '22

And, assuming the crust depth scales accordingly, it would have 8x the volume!

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u/UnbreakableStool Jun 30 '22

Not really, because a pizza that is twice as wide won't be twice as thick

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u/I_am_human_03 Jun 30 '22

How is knowing πr² a flex now?

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u/ronintalken Jun 30 '22 Silver Helpful

Pie are ROUND

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u/grabityrises Jun 30 '22

cake are square

thanks 8th grade math teacher for always adding a bit of whimsey to math

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u/Mean-Net7330 Jun 30 '22

Except when they're dinosaurs

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u/I_am_human_03 Jun 30 '22

Understandable. Have a nice day.

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u/The_Milehunter Jun 30 '22

r/angryupvote, shut up and take my upvote.

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u/fuckmylifegoddamn Jun 30 '22 Silver

God I hate comments like yours

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u/dpking2000 Jun 30 '22 Take My Energy

Shut up and take my orange arrow and get out!

EDIT: Thanks for the award kind stranger!

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u/Stephenhf123 5✓ Jun 30 '22

Guarantee 80%+ of people would happily accept and be like “hell yeah free inch of pizza!”

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u/oops_i_made_a_typi Jun 30 '22

all you have to do is fucking look at the two 5 inch pizzas side by side to realize you're missing two giant sections where a 9 inch would cover

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u/iWishiCouldDoMore Jun 30 '22 edited Jun 30 '22

But they are not providing a 9" pizza as a reference!

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u/forrnerteenager Jun 30 '22

Those sneaky motherfuckers

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u/fkbjsdjvbsdjfbsdf Jun 30 '22

congratulations on identifying exactly how stupid most people are, not sure why you are surprised

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u/Comedynerd Jun 30 '22

I don’t think its stupidity so much as laziness to do mental math. Source: I have a math degree and would probably just accept the two 5-inch pizzas if they said I couldn't have the 9-inch for whatever reason instead of thinking and making a scene to get 4x5" pizzas

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u/Baddyshack Jun 30 '22

Haven't you seen those simple algebraic equations that people can't get through because they dropped PEMDAS immediately after leaving the 8th grade?

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u/CharlieMike111 Jun 30 '22

pizza πr not ², pizza πr round

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u/Litty_McGritty Jun 30 '22

The man's making up fake stories on Twitter just let him have this one.

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u/LipSipDip Jun 30 '22

An elderly person using math to avoid getting ripped-off sounds fake to you?

What fucking planet are you living on?

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u/TXRazorback Jun 30 '22

Yea working in a pizza shop in college we had this formula and some similar bs story on the wall.

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u/TW_Yellow78 Jun 30 '22

How can a pizza restaurant run out of 9 inch pizzas but have 4 5 inch pizzas unless they're reselling supermarket frozen pizza? In which case, joke's still on him.

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u/_psyman Jun 30 '22

Because they prep all of the dough ahead of time weighed to specific "configurations" they allow.

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u/LipSipDip Jun 30 '22 edited Jun 30 '22

Thin crust, gluten-free, deep-dish, pre-weighed dough sizes ~ have none of you cats responding ever worked at a pizza place before?

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u/islandmind Jun 30 '22

yes, I don't think you understand how small a 5" pizza is

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u/okaythatstoomuch Jun 30 '22

Never let truth come between a good story.

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u/Busterlimes Jun 30 '22

Its not, Ive worked for a few owners who are just unemployable idiots and thats why they are "business owners"

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u/[deleted] Jun 30 '22

[removed] — view removed comment

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u/Kay1000RR Jun 30 '22

I wish I knew in 7th grade that I'd be smarter in math than 99.9% of adults. I just assumed every adult knew how to do calculus in their head.

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u/DedBull Jun 30 '22

As an engineer, I prefer (πd²)/4.

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u/Swarlsonegger Jun 30 '22

H-h-how is a 9 inch pizza "not available"? Was he at a frozen pizza place?

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u/Rocktopod Jun 30 '22

Even if they make them fresh they probably have someone that pre-portions a bunch of dough all at once, then goes home or does something else the rest of the day. They're not going to start making new dough for you at 3 in the afternoon.

Source: Used to work at a pizza place. Never ran out of a size of dough but I could see it being theoretically possible.

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u/Crewzie Jun 30 '22

I did work at a pizza place that would occasionally run out and this is exactly it. All the dough was made in the morning, usually worked out and our crust was pretty good i thought.

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u/radicalelation Jun 30 '22

Even Little Caesar's sets up a bunch early, but often has to do more later too, and they run crews so ragged you always got someone who can do dough.

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u/straightup920 Jun 30 '22

You mean little Caesar’s doesn’t just rip apart a cardboard box to use as dough?

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u/radicalelation Jun 30 '22

Surprisingly, no! Having worked there, I can tell you that the quality of the final product is directly proportional to the care and attention of the employees working.

Saw a very good crew there running a tight ship for a while, and the basic pizzas turned out really good, and certainly better than Dominoes or Pizza Hut, but once one of the good team leaders left, things got a little more dysfunctional, quality dropped, and others left when things got more difficult because of it.

I've never tasted such good Little Caesar's before or since.

Shitty doughing makes for shitty dough, shitty topping makes for shitty tops, and shitty attention on the oven makes for shitty cooking. Things get tough, chewy, inconsistently saucy or dry or so on and so on.

But it's Little Caesar's, it's cheap so customers come regardless, so no one ever seems to care about actually running one well.

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u/TheNumberMuncher Jun 30 '22

Thin crust is usually ordered rather than made at the restaurant. Maybe they only serve thin.

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u/asianabsinthe Jun 30 '22

If not a fake story it could've been a place that only orders frozen crusts

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u/JavaOrlando Jun 30 '22

Plus I feel like a pizza cook would realize that a 9" pizza is bigger that two 5" pizzas. Not because they necessarily know the formula used to measure the area of a circle, but because of the amount of dough they use when the make the crusts.

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u/baby-dick-nick Jun 30 '22

I mean even if they used fresh dough they only portion out so many pizzas every day.

We had many angry customers when I worked in pizza pissed that we couldn’t whip up 5 extra larges on demand. Told them we only prep 2 extra larges every day as they aren’t ordered very often and to next time place the order a day in advance so we could prepare. If they asked us to make more dough we’d politely tell them that it would be about 5 hours before it’s ready.

We’d run out of larges occasionally too.

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u/DapperCourierCat Jun 30 '22

I was going to say that only having 2 sounds ridiculous, but then realized that I have never in my life ordered an extra large pizza.

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u/DrKennethNoisewater- Jun 30 '22

I used to work at a “fancy” place that did brick oven pizza. It was all frozen crust and Sysco shit.

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u/KernelMeowingtons Jun 30 '22

Could be that they portion out the dough when they make it and the employee didn't think about combining dough balls. Also probably fake.

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u/MinnyRawks Jun 30 '22

Combining dough balls never comes out right after they have been separated and proofed

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u/ElevatorLost891 Jun 30 '22

Also apparently they would have combined two 5” pizza doughs and tried to make a 10” pizza from it

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u/Frolicking-Fox Jun 30 '22

Yeah, as someone else said, usually the morning dough roller has a set amount of sizes they cut out and prep in the morning, so sometimes they run out.

It's not as easy as just making some new dough, because the new dough will have massive bubbles. Dough needs time to rise and settle. New dough will turn the pizza into one giant bubble.

But... Usually when this happens, you take a larger size prepped dough, and cut it to the smaller size. If they were running low on the larger size, and had excess of the smaller ones, that could have been a reason to do it.

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u/EverGreenPLO Jun 30 '22

You don’t make dough on the fly

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u/theswerto Jun 30 '22

Worked in pizza for years, multiple restaurants both chain and small.

No, if the dough is proofed ahead of time they're already portioned out.

You can't just combine two small doughs and make a large one because proofed dough does not recombine properly. This isn't just an issue with combining small dough, but if you over stretch a dough and 'tear' it, fixing that tear isn't really doable and there will be a 'thin' spot in the dough for where you tried to stitch the hole back together.

The next best thing they could do is try to cut down a larger dough, but if 9 inches is their largest that's all they have.

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u/Sethco1973 Jun 30 '22

I make pizza and we have our dough panned in 10-12-14 inch pans so you can’t get other sizes even with fresh dough

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u/NotARealBlackBelt Jun 30 '22 edited Jun 30 '22 Silver Gold

For pizza, the radius is referred to as z, with the thickness of the pizza as a.

That way: Area of the pizza: pi * z * z Volume of the pizza: pi * z * z * a

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u/Laarye Jun 30 '22

I was going to say this. The use pizza to find how much pizza should be taught in school.

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u/supamario132 Jun 30 '22

Are you taking the pizz mate?

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u/NotARealBlackBelt Jun 30 '22

Nah, I like am thick as a

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u/TheExtremistModerate 1✓ Jun 30 '22

Why not just pi*z*z = A?

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u/watch_over_me Jun 30 '22

I had a person explain this process to me at work because the cafe started giving us two smaller cookies, rather than one big one. I thought I was getting more cookie, because to the human eye it looks like more.

No matter how it's explained to me, I still can't wrap my mind around this.

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u/sfled Jun 30 '22 Wholesome

Using OPs pizza thing as an example: https://i.redd.it/183wkbf2ot891.png

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u/redwarewolf Jun 30 '22

Great way for anyone to understand it.

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u/hungrydesigner Jul 01 '22

I read every comment down this thread and still had no clue wtf was going on here until this picture. Thank you from the slow kid in the room!

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u/FrostyD7 Jun 30 '22

Think of it in terms of a square/rectangle instead, its a similar principle but easier to make sense of. Take a 30" television and double it to 60" (measured corner to corner). Its "twice as big" but its really the screen area equivalent of four 30" tv's.

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u/natemarshall110 Jun 30 '22

Cool story but imma call the bluff on them bringing actual 5 inch pizzas

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u/Die-rector Jun 30 '22

That owners name? Albert einstein

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u/bach_inblack Jun 30 '22

Albert Pienstein

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u/PrudeJesus Jun 30 '22

Albert "Jeffery" Epstein

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u/sighs__unzips Jun 30 '22

All the pizzas are under 18.

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u/iushciuweiush Jun 30 '22

"What is this, a pizza for ants?"

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u/BolognaPwny Jun 30 '22

When he got his 6 pizzas everyone in the restaurant clapped

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u/noobi-wan-kenobi69 Jun 30 '22

And then Obama, who was working in the kitchen, gave everyone $100.

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u/cizzop Jun 30 '22

...5" pizza? Do you just swallow them whole?

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u/Traditional-Ad3161 Jun 30 '22 Wearing is Caring

Yep, but you have to fold them in half first unless you're Julia Roberts.

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u/DionFW Jun 30 '22

Because horse mouth ?

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u/Seethi110 Jun 30 '22

Side note, a 5in pizza is literally like a bagel bite. Who makes and buys pizzas that small?

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u/David_R_Carroll Jun 30 '22

People who want 19.63 square inches of pizza?

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u/iskyfire Jun 30 '22

I mean that's how I order all of my circular shaped foods, with 2 decimal point precision.

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u/supamario132 Jun 30 '22

Um actually a 5 in pizza is 19.53 sq in and a bagel bite is only 7.07 sq in. Even if you gave me 2 bagel bites, I would still lose out. My brain is gigantic for knowing this formula

Take Maths seriously!

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u/vpsj Jun 30 '22

I once ordered a "personal" pizza from a restaurant. It was really cheap. When it arrived I was so amazed(read: shocked) I had to Take a picture

Never ordered from there again.

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u/illiter-it Jun 30 '22

That looks like one of those novelty gummy pizzas

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u/Seethi110 Jun 30 '22

It’s like the pizza puck from Back to the Future 2 before they zapped it in the oven

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u/WeAreBeyondFucked Jun 30 '22

Isn't that a normal personal sized pizza? Isn't that about the same size as one from pizza hut?

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u/degjo Jun 30 '22

You can't fool me, thats a medium and you have Shaq sized hands

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u/EntMD Jun 30 '22

What is this, a pizza restaurant for Ants?

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u/icecream_truck Jun 30 '22

2 pizzas 1 man

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u/tarantulasoup Jun 30 '22 edited Jun 30 '22

The largest pizza is always* the best deal, not to mention the larger crust to toppings ratio of the smaller pizza. Not the same, but consider a TV, there is larger difference between a 50" and 60" than one might think.

50" - 1068 in²

60" - 1538 in²

50% more area!

EDIT: *USUALLY lol, I forgot what subreddit I was on

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u/Belgand Jun 30 '22

not to mention the larger crust to toppings ratio of the smaller pizza.

Thank you. This was the other issue that bothered me. Even if you give someone several smaller diameter pizzas that yield an equivalent area you're screwed on the deal because of the increased amount of terrible, worthless crust.

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u/prettyhappyalive Jun 30 '22

What did crust do to you?

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u/SokkasSandals Jun 30 '22

I agree. This is what I was looking for. However, technically, the larger the pizza, the larger the toppings to crust ratio.

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u/Methodless Jun 30 '22

There's a place near me where the 2nd largest pizza is actually the best deal, but it is actually the only instance I've seen where the largest isn't the best deal.

Each size goes up by 2 inches in diameter, which has a diminishing percentage size increase, but their price differences are getting progressively larger, e.g. $2 from small to medium, $4 from medium to large, etc

Eventually the percentage price increase exceeds the size percentage increase

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u/Keep_deleting_accts Jun 30 '22

Yeah, but some of us have no self control and need to limit the size we buy because every pizza is a one sitting personal pizza.

So it's the best deal for the wallet, but not my belly :(

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u/just_some_a--hole Jun 30 '22

Had to walk my wife through something similar. We were tiling an 8' x 4' wall, and we needed enough tile backer-board to put on it before we could start putting the tile on. She bought two sheets of 3' x 5' backer-board, thinking that would be plenty. I didn't realize we didn't have enough until after the hardware store was closed. In the meantime, I took her on a walk through middle-school geometry.

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u/[deleted] Jul 01 '22

I have heard so many times that math is useless, but whenever it’s practical uses are brought up people just seem to be annoyed. Lol

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u/tuelegend2 Jun 30 '22

Why date a 10 when you can date 2 5’s?

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u/UnoriginalPenName Jun 30 '22

Weirdest r/ThatHappened I’ve ever read wtf

Dont take this seriously guys cmon

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u/xXPussy420Slayer69Xx Jun 30 '22

Only missing the part where “the whole pizzeria stood up and clapped”

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u/[deleted] Jul 01 '22

I would have done this. Not all of it, but if I needed a certain amount of pizza I would have pointed out that doubling the radius quadruples the size.

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u/SlySciFiGuy Jun 30 '22

A lot of people in these comments are getting radius wrong. A nine inch pizza has a 4.5 inch radius.

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u/Working_Early Jun 30 '22

I'd guess the owner was speechless because they were thinking: "I don't have time for this shit, just give him the pizzas so he can leave faster."

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u/Mountain-Art6254 Jun 30 '22

Couldn’t you further your argument by including the cheese/toppings part of the pizza(s) vs. the crust?

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u/cmacfarland64 Jun 30 '22

Area doesn’t matter. Volume matters. Maybe those smaller pizzas were significantly thicker??? I’m obviously kidding, but as an algebra teacher, I’m totally using this post in my class next year.

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u/[deleted] Jul 01 '22

I know you said you were kidding, but the area still matters if you value the toppings significantly. Those almost certainly scale with area.

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u/Unable_Eggplant6952 Jun 30 '22

I used to work at a liquor store that gave discounts of 7% off six bottles of wine or 12% off 12 bottles of wine. A couple came in and was going to buy 10 bottles of wine when I told them about the discount for getting the full 12 bottle case. They immediately became very excited and said "well we will just buy 6 bottles each and it will be 14% off" since clearly you add the percentages. Despite my trying to explain that's not how it worked they were very insistent that they were putting one over on me and that "they were just following the rules of the discount" that I had told them. They even insisted on having the wine bagged separately so that it would be "legal." Some people really suck at math

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u/Withmmurderousintent Jun 30 '22

HE DO NOT PLAY ABOUT HIS PIZZA!!

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u/damn_jexy Jun 30 '22

And they say math doesn't have real world application

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u/Kkvenkatkr Jun 30 '22

If we are going to flex on the math, might as well go one step further. Assuming a crust width of 0.75 inches (and assuming you don't eat the crust of a frozen crust pizza), you need 4.6 5 inch pizzas.

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u/Chasman1965 Jun 30 '22

I would Have compromised for 3 and an order of breadsticks.....

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u/Snoo-82295 Jun 30 '22

Not a mathematician here but I'd feel hard done by crust wise with the 2 smaller pizzas

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u/sineofthetimes Jun 30 '22

Pizza place near my college, many years ago, advertised two 10-in. pizzas equals one 20in. pizza. Wonder how many people actually fell for it.

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u/Crafty_DryHopper Jun 30 '22

I just imagine they are square. You would need four 5x5 inch pizzas to equal one 10x10 inch pizza.

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u/Snuggly_Hugs Jun 30 '22 edited Jun 30 '22

Yeah...since its diameter you got 20.25pi vs 6.25pi, or about 1/3 of the pizza they ordered for each of the small ones.

So he should have gotten at least 3 uaing the floor function version, 3 and 2 slices to be barely above what he ordered, and 4 to actually be a significant gain.

Editted to include the number of replacement pizzas.

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u/theyipper Jun 30 '22

The real cost is the toppings. There are no toppings on a regular crust "handle".

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u/Hot-Explanation6044 Jun 30 '22

This guy's life is an irl math problem

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u/chefpatrick Jun 30 '22

His biggest mistake was going to a place that sells a 5" pizza in the first place

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u/sp4nky86 Jun 30 '22

Wouldn’t a 5” pizza be literally nothing? Like a 9” seems like it is too small, a 5 seems unreasonably small.

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u/Electricerger Jul 01 '22

Quicker check, put the two pizzas on a 9" pan and notice how they don't take up the full pan

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u/Dunkel_Phil Jul 01 '22

I hope you tipped $3.14

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u/EffectivePattern7197 Jul 01 '22

One time I went to Blaze pizza. And I asked that they added jalapeños to one quarter of the pizza only (yes, that was dumb of me but I was afraid it was going to be too spicy). But the guy just stared at me, and he asked “a quarter, like a coin?” He was so confused, so I said “nevermind, just put jalapeños everywhere” and he did. That was the best thing ever.

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u/MegaPaint Jul 01 '22

Indeed. To make 2x5" pizzas one uses about 62% of a 9" pizza material as the depth is the same. For each trick like this the seller pocketed almost 38% in residual materials costs, and probably 9" was registered in their accounting report of sales to the management, authorities, taxes, etc. No way they don't know they are using almost half of materials, therefore to say that the client gets 1" free it is a typical fraud that can be reported bacause 38% of what was asked and paid was not given. (2x5"pizza area ÷ 1x9"pizza area =~0.62, the depth is assumed the same. Pizza area = 0.25×pi()×(D)2)

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u/Separate_Drama6295 Jul 01 '22

I was working in a cake shop for a bit when I was younger and a group of customers kept asking me why the price diff of a 6" cake and a 8" cake was almost double. I wish I had the wit to explain it like this back then. But young and awkward me just ended up sheepisly shrugging away when my initial explanation of how the 8" cake is almost twice the weight of the 6" was shot back with a "but its only 2 inch difference, how can it be?"

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u/ArweTurcala Jul 01 '22

I have done this too. A 20-inch pizza or something (don't exactly remember the inches), worth like PKR 1600 , and a 10-inch one worth PKR 800. My sister and I thought that we would be getting the same amount of pizza, but we were just stuck om which one to order. Then I randomly take up a calculator and... oh boy. Twice the pizza in the same price.

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u/nightingaledaze Jul 01 '22 Helpful

it's really sad to me how so many of these comments hate learning. There's absolutely nothing wrong with learning things in life as there's honestly something to learn practically every single day.

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u/M2LA Jul 01 '22

fuck yeah! love this!!