Question

A cylinder tank is 785 cubic feet. The height is 10 ft use the formula v=pi.r2.h to find the radius.

Answer 1

Cylinder height(h) is 10ft.

Volume of the cylinder is V = ∏r^2h

Given V = 785 Cubic feet.

785 = 22/7*r^2*10

785 = 31.42r^2

Divide to each side by 31.42.

785/31.42 = 31.42r^2/31.42

24.98 = r^2

Apply squre root on each side.

Sqrt(24.98) = Sqrt(r^2)

r = 4.99

Radius of the cylinder tank is 5 feet.