Question

How much more pizza is in a 12-in. diameter pizza than an 8-in. diameter pizza?

Answer 1

A = pi * r^2 
A = 3.14 * 16 
A = 50.24 square inches 
50.24 / 12 = _______ square inches 
geometry - Becky, Saturday, May 4, 2013 at 7:44pm 4.2

Answer 2

1) Find the area of the pizza assuming a uniform regular circular shape. 

Area = PI * 0.25 * (D)^2

A1 = 3.14 * 0.25 * (12)^2 = 113.04 in^2

A2 = 3.14 * 0.25 * (8)^2 = 50.24 in^2

Pizza difference = 113.04 - 50.24 = 62.8 in^2

More pizza = 62.8/50.24 x 100  - 100 = 25 %

You can do anything with mathematics ^_-