Contrary to what you might have argued your whole life, mathematics does have a few practical applications as well. It can, for example, help you decide how to get the most pizza for your buck.

A tweet going viral on the Internet right now explains how ordering an 18-inch pizza is better than ordering two 12-inch pizzas. Confused? Take a look:

Here's a useful counterintuitive fact: one 18 inch pizza has more 'pizza' than two 12 inch pizzas pic.twitter.com/hePSpG0pJs

— Fermat's Library (@fermatslibrary) January 7, 2019

The tweet explains how, simply by calculating the area of a circle, one can reach the conclusion that an 18-inch pizza serves 254 square inches of food, whereas two 12-inch pizzas have only 226 square inches.

Surprised? Well, numbers don't lie.

Here's how people reacted to the revelation:

Life changing information https://t.co/EoMDrQEQV1

— Tristan Ramcharan (@tristan_kw) January 8, 2019

@EduSum @aliceinframes I got a degree in mathematics just so I could draw this for you 🍕🤪👍 pic.twitter.com/f1qCfKDzoK

— Eddie Woo (@misterwootube) January 8, 2019

I just inflicted this on my friend. She didn't believe me, she did the math, then she let out the most straight-from-the-soul "Ｎｏ" that I've ever heard.

— Sam Block 𐠎 (@polyphanes) January 7, 2019

The pizza industry has known this for years but kept their studies hidden. Thanks for speaking truth to power, Andy.

— Dale Jackson (@DaleJacksonPI) January 7, 2019

Finally...”Big Pizza” being exposed for the frauds they are. You’ve done god’s work here sir thank you.

— Bill (@ReplaceRokita) January 8, 2019

At least now you know the correct way to order pizza.