Use two formulas for volume to find the volume of the figure

Use two formulas for volume to find the volume of the figure. Express the answer in terms of pi () and then round to the nearest whole number.

Solution

Radius = 18/2 = 9ft
Hieght of cylinder = 23ft

The 2 formulae will that of:

Vol. of hemisphere + Volume of cylinder
=pi*9^2 *23 +2/3 *pi*9^2
=pi(81*23+54)
=pi*1917
=6022.433 sq ft