Question

What is the value of x, if the volume of the cone is 12 pi m^3?

4 m
5 m
6 m
10 m

Answer 1

4 m

Explanation:

The volume of a cone is given by

V = 1/3 pi r^2 h

12 pi = 1/3 pi (3)^2 x

12 pi = 1/3 pi 9 x

12 pi = 3pi x

Divide each side by 3 pi

12 pi / 3pi = 3pix/ 3pi

4 =x