Answer:
The height is 10 cm
Step-by-step explanation:
The volume of a cylinder is given by
V = pi r^2 h where r is the radius and h is the height
90 pi = pi r^2 h
We know the radius is 3
90 pi = pi (3)^2 h
90 pi = 9 pi h
Divide each side by 9 pi
90 pi /9 pi = 9 pi h / 9pi
10 =h
The height is 10 cm
