this post was submitted on 15 Dec 2023
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[–] [email protected] 100 points 9 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.

[–] [email protected] 45 points 9 months ago (2 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 9 months ago (1 children)

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

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[–] [email protected] 4 points 9 months ago (1 children)

That's why you order thin crust and get those toppings out to the edge

[–] [email protected] 4 points 9 months ago (1 children)

A thin crust pizza is just a small pizza stretched out to the size of a larger pizza ... it's paying for a large pizza while asking for a small pizza.

I tell this to my wife all the time but she still loves her thin crust pizza.

[–] [email protected] 5 points 9 months ago (1 children)

It depends what you want to get for your money.

A meal you like and enjoy eating?

Or the maximum amount of pizza-ish mass per dollar?

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[–] [email protected] 13 points 9 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] 6 points 9 months ago (1 children)

Care to share with the class?

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[–] [email protected] 9 points 9 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] 23 points 9 months ago (2 children)

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

[–] [email protected] 9 points 9 months ago (3 children)

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

[–] [email protected] 6 points 9 months ago (1 children)
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[–] [email protected] 95 points 9 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] 14 points 9 months ago

I love this

[–] [email protected] 4 points 9 months ago

I wish I could award you with fake Internet points.

[–] [email protected] 24 points 9 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] 57 points 9 months ago (3 children)

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

[–] [email protected] 9 points 9 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 9 months ago

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

[–] Bronzie 6 points 9 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

[–] [email protected] 23 points 9 months ago

On this episode of: The internet goes to primary school

[–] [email protected] 11 points 9 months ago (1 children)
[–] [email protected] 8 points 9 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

[–] [email protected] 3 points 9 months ago

Very nice :)

[–] [email protected] 11 points 9 months ago (2 children)
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[–] [email protected] 10 points 9 months ago (2 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.

[–] Patches 13 points 9 months ago* (last edited 9 months ago) (3 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 9 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] 4 points 9 months ago (2 children)

Dominos actually got better. It's not amazing but they took it on the chin a few years back and were like, "our pizza sucks. We need to do better" and they actually improved it quite a bit.

[–] [email protected] 5 points 9 months ago

I actually liked it better when it sucked more. I have no idea why. Maybe I identified it as college comfort food.

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[–] [email protected] 4 points 9 months ago* (last edited 9 months ago) (2 children)

The math only really works for 18+ inch pizzas though. The pizza places around me don't even offer 18 inch pizzas. 14" large or 16" XL are the highest they go. In that case at most places near me, two twelves is often cheaper per square inch and does have more area than one 14" or 16". Especially since Domino's usually has coupons for two 12s that make it significantly cheaper than 1 L or XL.

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

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

[–] [email protected] 4 points 9 months ago

Not if you like crust

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

you can fit more pineapples on the one 18 inch pizza

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[–] [email protected] 5 points 9 months ago

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

[–] [email protected] 5 points 9 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 9 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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[–] Jumuta 4 points 9 months ago

9 is more than 2 times 4

[–] [email protected] 4 points 9 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] 3 points 9 months ago

But… it’s twice as many slices!

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