Question

The volume of a cone is 540pi
Work out the height,of the cone.
The radius is 9cm

Answer 1

Formula for volume of a cone = pi x r^2 x h/3

540pi = pi x 9^2 x h/3

Divide both sides by pi:

540= 9^2 x h/3

Simplify:

540 = 81 x h/3

Divide both sides by 81:

6 2/3 = h/3

Multiply both sides by 3

H = 20

the height is 20 cm