Erika ate two slices of a pizza with a 20" diameter. The pizza was sliced into 8 congruent slices. What was the area of the pizza that Erika ate?

Question

danjs · Answer

This pizza has the same area as the last problem...

100*pi

She ate 2 out of 8 slices, or 1/4 the pizza

danjs · Answer

1/4th  of (100pi)  is   25pi  square inches that she ate

anonymous · Answer

@DanJS so what would the length of the crust of each pizza be? Is it 3.125?

danjs · Answer

The length of the crust is found by the circumference of the pizza circle. 

2*pi*radius = 2*pi*10   =   20*pi

The whole pizza is 20pi around, each piece is 1/8 th of that