Question

The height of a cylinder is twice the radius of its base.

What expression represents the volume of the cylinder, in
cubic units?
2x
47x2
2x
x2 + 2x
O2 + x
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Answer 1

Explanation:

The volume of a cylinder is given by :

`V=\pi r^2 h`

r is the radius of the base of a cylinder

h is height of cylinder

The height of a cylinder is twice the radius of its base. It means that h = 2r

So, volume of cylinder becomes :

`V=\pi r^2(2r)\\\\V=2\pi r^3`

So, the volume of the cylinder is given by the expression
`2\pi r^3`.