Question

How many times larger is the volume of a cylinder if the radius is tripled?

Answer 1

9 times larger

Explanation:

The volume (V) of a cylinder is calculated as

V = πr²h ( r is the radius, h the height )

Ir is tripled , that is r = 3r , then

V = π × (3r)² h = 9πr²h

That is the volume is now 9 times larger