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@lemmy.world 47 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!

[–] 0x0@lemmy.dbzer0.com 10 points 9 months ago (1 children)

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

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[–] Toastypickle@lemmy.world 4 points 9 months ago (1 children)

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

[–] ininewcrow@lemmy.ca 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.

[–] Turun@feddit.de 7 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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[–] driving_crooner@lemmy.eco.br 15 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.

[–] RinseDrizzle@midwest.social 10 points 9 months ago (4 children)

What's the app?

[–] driving_crooner@lemmy.eco.br 11 points 9 months ago (2 children)

https://f-droid.org/packages/de.drhoffmannsoft.pizza/

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[–] alexdoom@beehaw.org 8 points 9 months ago

I think its the calculator app, with a bit of prompt engineering to get the needed results.

[–] PoolloverNathan@programming.dev 7 points 9 months ago (1 children)

Android Studio + a bit of math?

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[–] Toastypickle@lemmy.world 6 points 9 months ago (1 children)

Care to share with the class?

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[–] volvoxvsmarla@lemm.ee 13 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

[–] Bonehead@kbin.social 25 points 9 months ago (2 children)

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

[–] volvoxvsmarla@lemm.ee 10 points 9 months ago (7 children)

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

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[–] ApfelstrudelWAKASAGI@feddit.de 24 points 9 months ago

On this episode of: The internet goes to primary school

[–] xantoxis@lemmy.world 22 points 9 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.

[–] oshitwaddup@lemmy.antemeridiem.xyz 8 points 9 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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[–] Squeak@lemmy.world 19 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…

[–] solivine@sopuli.xyz 42 points 9 months ago (3 children)

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

[–] Viking_Hippie@lemmy.world 10 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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[–] criitz@reddthat.com 15 points 9 months ago

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

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[–] SternburgExport@feddit.de 17 points 9 months ago (5 children)

What's an inch?

[–] KISSmyOS@lemmy.world 26 points 9 months ago (1 children)

A measure of length equal to 1440 twips, 3 barleycorns or 1/7920th of a furlong.

[–] AnUnusualRelic@lemmy.world 4 points 9 months ago

So convenient.

[–] 5in1k@lemm.ee 6 points 9 months ago

About the length of the last segment of your thumb.

[–] I_am_10_squirrels@beehaw.org 4 points 9 months ago (1 children)

Not enough

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[–] curiousaur@reddthat.com 14 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@sh.itjust.works 12 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.

[–] curiousaur@reddthat.com 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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[–] negativeyoda@lemmy.world 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.

[–] stewie3128@lemmy.dbzer0.com 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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[–] Sloogs@lemmy.dbzer0.com 5 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 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.

[–] curiousaur@reddthat.com 4 points 9 months ago (1 children)

Factor in the crust ratio of those though. We're talking 1.5 inch of crust, so 16" vs 12" is actually more like comparing 13" to 9" of pizza with cheese and topping. 132 v 64 square inches. You're getting 70 squares inches of crust on that 16", and 49 square inches of crust on the 12 inch. So more total food on 2 12s, but a lot more crust than one 16.

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[–] AnarchistsForDemocracy@lemmy.world 14 points 9 months ago (1 children)

3 small dominos have more area than 2 large, even though they are cheaper.

[–] Patches@sh.itjust.works 10 points 9 months ago* (last edited 9 months ago)

It's 6.99 for a 12in pizza with 2 toppings but $20 for a 18in with no toppings. I don't even know why it's a option.

[–] thekaufaz@toast.ooo 14 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.

[–] BluesF@feddit.uk 5 points 9 months ago

A pizza is larger than two of another just before it hits 1.5 times the radius (sqrt 2 times, to be exact, about 1.41). So if the radius is 1.5 times bigger, like in the OP, you always know it's more than twice the area.

[–] Spendrill@lemm.ee 11 points 9 months ago (1 children)

Pizza π

[–] LordAmplifier@pawb.social 10 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

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[–] stewie3128@lemmy.dbzer0.com 9 points 9 months ago (1 children)

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

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[–] franklin@lemmy.world 8 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

[–] cupcakezealot@lemmy.blahaj.zone 7 points 9 months ago (1 children)

you can fit more pineapples on the one 18 inch pizza

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[–] marty@infosec.pub 7 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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[–] Thassodar@lemm.ee 7 points 9 months ago* (last edited 9 months ago)

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

[–] Speiser0@feddit.de 5 points 9 months ago

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

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