We can think of a pie as a frustum of a right circular cone, which means that it has a top circle, a bottom circle, and a height (or depth). We measured a pie, and found out the circle of the top diameter is 10 inches and the bottom diameter is 8 inches. We also know that the volume of this dish is 40 2/3π cubic inches. Using your knowledge of circles, and using the following formula for a frustum of a cone:V=1/3 pi (r2/2+r1 r2 +r 2/1), answer the following questions. (Give the exact answer AND an answer rounded to the nearest tenth (if applicable). Include appropriate units. Use the button on a calculator to estimate).

a. Find the circumferences of the top and bottom of the pie

b. Find the areas of the top and bottom of the pie

c. Find the depth of the pie