Volume of a cylinder

Question

What is the height of a cylinder whose volume is 18*(pi) and whose radius is 3 ?

Answer 1

V=18pi = pi(r^2)h

r= 3

V= 18pi = pi(9)h

h = 18pi/9pi = 2= height of the cylinder

Answer 2

The volume of a cylinder is π (radius)² (height), so 18π = π(3)²(height), or height = 2.

Answer 3