this post was submitted on 15 Dec 2023
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[–] Bougie_Birdie@lemmy.blahaj.zone 121 points 11 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

[–] Telcontar 18 points 11 months ago

I love this

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[–] julianwgs@discuss.tchncs.de 115 points 11 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@lemmy.world 49 points 11 months ago (5 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 11 points 11 months ago (1 children)

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

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[–] driving_crooner@lemmy.eco.br 17 points 11 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 12 points 11 months ago (4 children)
[–] alexdoom@beehaw.org 12 points 11 months ago

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

[–] PoolloverNathan@programming.dev 7 points 11 months ago (1 children)

Android Studio + a bit of math?

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[–] Toastypickle@lemmy.world 6 points 11 months ago (1 children)

Care to share with the class?

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[–] volvoxvsmarla@lemm.ee 14 points 11 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 26 points 11 months ago (2 children)

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

[–] volvoxvsmarla@lemm.ee 11 points 11 months ago (3 children)

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

[–] NewNewAccount@lemmy.world 7 points 11 months ago (4 children)
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[–] Squeak@lemmy.world 26 points 11 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 58 points 11 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 9 points 11 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 17 points 11 months ago

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

[–] Bronzie@sh.itjust.works 5 points 11 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@lemmy.world 25 points 11 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 11 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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[–] ApfelstrudelWAKASAGI@feddit.de 24 points 11 months ago

On this episode of: The internet goes to primary school

[–] SternburgExport@feddit.de 17 points 11 months ago (5 children)
[–] KISSmyOS@lemmy.world 27 points 11 months ago (1 children)

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

[–] AnUnusualRelic@lemmy.world 5 points 11 months ago

So convenient.

[–] 5in1k@lemm.ee 6 points 11 months ago

About the length of the last segment of your thumb.

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[–] AnarchistsForDemocracy@lemmy.world 16 points 11 months ago (1 children)

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

[–] Patches@sh.itjust.works 11 points 11 months ago* (last edited 11 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.

[–] curiousaur@reddthat.com 14 points 11 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 13 points 11 months ago* (last edited 11 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.

[–] curiousaur@reddthat.com 5 points 11 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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[–] Sloogs@lemmy.dbzer0.com 5 points 11 months ago* (last edited 11 months ago) (3 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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[–] thekaufaz@toast.ooo 14 points 11 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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[–] Spendrill@lemm.ee 12 points 11 months ago (1 children)
[–] LordAmplifier@pawb.social 10 points 11 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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[–] cupcakezealot@lemmy.blahaj.zone 9 points 11 months ago (2 children)

you can fit more pineapples on the one 18 inch pizza

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[–] stewie3128@lemmy.dbzer0.com 9 points 11 months ago (1 children)

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

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[–] Thassodar@lemm.ee 8 points 11 months ago* (last edited 11 months ago)

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

[–] franklin@lemmy.world 8 points 11 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

[–] marty@infosec.pub 7 points 11 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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[–] Speiser0@feddit.de 5 points 11 months ago

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

[–] Kolanaki@yiffit.net 5 points 11 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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