How do you calculate the area of a pizza crust?

To calculate the the area of a crust, we first need to find the whole area of the pizza.

Let's assume the entire radius is x. So our whole pizza area is π.

Then we find the radius of the "cheese" part of the pizza.

Let's assume the radius for this is y. So our area is π.

So we subtract both areas.

π-π.

And that's the basic gist of it.

substitute,

circle 1 = 5

circle 2 = 20

circle 3 = 44

in this case no matter how you add, you will always get a perfect square..

hence proved

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