this post was submitted on 15 Dec 2023
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[–] [email protected] 118 points 10 months ago (2 children)

If you let the radius be Z, then you can find the area of a pizza with a simple formula:

Pi * Z * Z = A

[–] [email protected] 18 points 10 months ago

I love this

[–] [email protected] 4 points 10 months ago

I wish I could award you with fake Internet points.

[–] [email protected] 105 points 10 months ago (3 children)

I once taught private lessons in math on calculating the area of a circle and I wanted to show the students how much cheaper per area a larger pizza is. So we of course got the diameters of pizzas from their favorite restaurant and started calculating. Then we found out that the normal sized pizza was actually the cheapest per area. It wasn‘t quite what we expected, but a very good math lesson for the attendees nonetheless: The owner lost money, because they were bad at maths.

[–] WaxedWookie 51 points 10 months ago (6 children)

You didn't consider the crust ratio, did you?

The crust tends to be a consistent width, so it represents a greater portion of a smaller pizza, shrinking the bit most people are there for.

...but hey, if you love the crust just as much, more power to ya!

[–] [email protected] 10 points 10 months ago (1 children)

Keeping the total pizza volume fixed, many smaller pizzas also means more boxes.

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[–] Mr_Blott 6 points 10 months ago

Oh god do I love crust. When it's all bubbly and almost burnt black 🤤 Naples does it best

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[–] [email protected] 13 points 10 months ago (2 children)

I have an app for that, put the price and diameter of different pizzas and it says what's the best one price wise.

[–] [email protected] 9 points 10 months ago (3 children)
[–] Toastypickle 6 points 10 months ago (1 children)

Care to share with the class?

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[–] [email protected] 9 points 10 months ago (1 children)

Did you take into account that the crust takes away area from the "filling"? Because me and my husband also once did the math (not sure if we were frugal, bored or broke) and it all came down on whether you eat/enjoy the crust or not

[–] [email protected] 24 points 10 months ago (2 children)

Crust is part of the pizza. That's what dipping sauces are for.

[–] [email protected] 8 points 10 months ago (3 children)

Where I live there is nothing like dipping sauces for pizza and thankfully so

[–] NewNewAccount 7 points 10 months ago (4 children)
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[–] Squeak 28 points 10 months ago (3 children)

But the 2 12” pizzas have more crust, so it depends what you prefer.

I’m wholly in the pizza centre and fuck the crust camp. But for those who like the crust…

[–] [email protected] 58 points 10 months ago (3 children)

You're meant to eat the crust, not fuck it, that might be where you're going wrong

[–] Viking_Hippie 9 points 10 months ago

You're meant to eat the crust, not fuck it

Really? Guess now I know why everyone has been looking at me funny after the company pizza party 🤔

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[–] [email protected] 16 points 10 months ago

I mean I like crust but who's out here looking for a higher crust ratio?

[–] [email protected] 5 points 10 months ago

Shit man, I'm a crust guy but hate paying more for less...
You sort of ruined my life now.

Merry x-mas you bastard

[–] xantoxis 25 points 10 months ago (2 children)

ok but that picture is clearly one 18" pizza vs two 18" pizzas that have been hit by a shrink ray, meaning the two on the right have twice as much nutrition as the one on the left.

[–] [email protected] 8 points 10 months ago

Ah but it's mini-nutrition now, so you have to shrink yourself in order for your body to be able to process it

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[–] [email protected] 23 points 10 months ago

On this episode of: The internet goes to primary school

[–] [email protected] 14 points 10 months ago (1 children)

You can compare areas with just r^2 you don't even need pi. So the math is easy.

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[–] [email protected] 12 points 10 months ago (4 children)
[–] [email protected] 4 points 10 months ago

About 1/5th the size of the average American penis

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[–] [email protected] 11 points 10 months ago (1 children)
[–] [email protected] 9 points 10 months ago (1 children)

The volume of a pizza with a radius of "z" and a height of "a" is π*z^2^*a, or pi*z*z*a

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[–] [email protected] 11 points 10 months ago (4 children)

This is why, if you order pizza, getting anything less that the absolute largest size they offer is throwing your money away. Leftover pizza is great.

[–] [email protected] 12 points 10 months ago* (last edited 10 months ago) (5 children)

Depends on the price difference.

https://www.omnicalculator.com/food/pizza-comparison

Domino's is hardly considered pizza by most but it's $7 for a 12in. A 18in is $20. That's almost 3 pizzas. And the 12in has 2 toppings. The 18in has 0 toppings.

[–] [email protected] 5 points 10 months ago (3 children)

That's calculator doesn't take into account the crust ratio, which is much higher for smaller pizzas too.

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[–] [email protected] 9 points 10 months ago (1 children)

The most worthwhile comparison is of the surface area, excluding crust. Crust quotient must be disregarded.

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[–] [email protected] 9 points 10 months ago (2 children)

you can fit more pineapples on the one 18 inch pizza

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[–] [email protected] 8 points 10 months ago* (last edited 10 months ago)

I saw this exact thing in a pizza shop an hour ago. What the actual hell

[–] franklin 7 points 10 months ago

I figured this out pretty quick when I was 16 trying to calculate the optimal pizza per $ order when I first started getting allowance

[–] [email protected] 5 points 10 months ago (2 children)

How come I am able to eat an entire 18'' pizza to my face but get full of I try eating two 12'' pies? 🤨

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[–] [email protected] 5 points 10 months ago (1 children)

Importantly, it also has a different crust-to-center ratio, which - depending on your taste - could be a reason to go for less pizza.

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[–] [email protected] 5 points 10 months ago

At least you didn't measure the pizzas with your feet.

[–] [email protected] 4 points 10 months ago

9 is more than 2 times 4

[–] [email protected] 4 points 10 months ago (1 children)

yeah, but
C_1 = pi * d = 3,14 * 18 = 56,52
C_2 = pi * d * 2 = 3,14 * 12 * 2 = 75,36

so the smaller ones have 50% more crust and are therefor more delicious.

[–] [email protected] 5 points 10 months ago

This is not righteous.

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