Question

The radius of a cone-shaped tank is 4 feet less than its height. If the height of the tank is (x - 3) feet, the expression below shows the volume of the tank.

π (x - 7)2 (x - 3)

What does the factor (x - 7)2 represent?

The square of the radius of the circular base of the tank

The square of the height of the tank

The area of the circular base of the tank

Answer 1

The square of the radius of circular base of the tank is the answer.
"The radius of a cone-shaped tank is 4 feet less than its height. "
Since the height is X-3, The radius is (X-3) -4 = X-7.