Question

The volume of a cylinder is 480pie cm3. The height of the cylinder is 30 cm. What is the radius of the

cylinder?
The radius of the cylinder is
cm. (Simplify your answer.)

Answer 1

R = 4cm

Explanation:

V = π(R)²h = 480π

Divide by π

(R)²h = 480

Substitute h with 30

30*(R)² = 480

Divide by 30

(R)² = 16

Square root

R = 4cm

We do not accept R= -4 because it's a length, so it must be positive.