Question

Suppose a cylinder has a diameter of 18 feet and a height of h feet. Which equation can be used to find V, the volume of the cylinder in cubic feet?

Answer 1

81

Explanation:

Answer 2

V = 81 pi h

Explanation:

Volume of a cylinder is

V = pi r^2h

We know the diameter so we can find the radius

d = 2r

18 = 2r

Divide both sides by 2

9 =r

Substituting what we know

V = pi * (9)^2 h

V = 81 pi h