Maths may not be everyone's favourite subject but it can sometimes come in handy - for example if you want to get more pizza for less money.
A simple maths formula shows that you can buy one pizza and get more to eat than if you'd splashed out on two.
Taking to Twitter, one maths fan explained: "An 18in pizza has 254 square inches of pizza while two 12in pizzas only have about 226 square inches."
So if you buy one 18-inch, you will get more pizza than if you bought two 12-inch pies.
But you will get less crust, reports BirminghamLive, so if that's your favourite part then sacrifices have to be made.
One Twitter user replied: "The crust is arguably the best part and two 12in pizzas have 33.3% more crust than an 18in pizza. And now I'm hungry, thanks!"
Another said: "The two 12in pizzas together have 33% more crust, which everyone knows is just a tragic waste of bread."
Another counting ace added: "The general principle is: faced with the choice of having one big pizza whose diameter is α times the diameter of the small ones, or β small ones- choose the big one if α>sqrt(β)."
They added: "In the private case above α=1.5>sqrt(β)≈1.41 => choose one big pizza."
Yiou don't need to know the formula for this handy triuck to work.
