Question 36279
The answer is we are not getting the same amount of pizza

If you get a large one. The area of of the pizza is pi*(r^2) where r is radius 
for 16inche pizza the radius is 16/2 =8 therefore area =pi*(8^2) = 64*pi

if you find the area of one small pizza with radius 8/2 =4 inches is pi*(4^2)

The area of two small pizzas is 2*pi*(4^2) = 1*16*pi =32*pi

64*pi > 32*pi

The amount we get by buying two little pizzas is half less than what we would get if we were to buy a large pizza.

32*pi = 0.5*64*pi