Question

A right cylinder has a radius of 2 units and a height of 5

units.
What is the volume of the cylinder? Round to the nearest
tenth.
31.4 cubic units.
62.8 cubic units
157.1 cubic units
314.2 cubic units.

Answer 1

62.8

Explanation:

The volume of the cylinder is = base * height

base=Pi*radius*radius, where

base=3.1416*2*2 , height=5

Volume=3.1416*2*2*5

Volume =62.8 cubic units.

Answer 2

Option B.

Explanation:

It is given that right cylinder has a radius of 2 units and a height of 5 units. It means

r = 2

h = 5

The volume of a right cylinder is

`V=\pi r^2h`

where, r is radius and h is height of the cylinder.

Substitute r=2 and h=5 in the above formula.

`V=\pi (2)^2(5)`

`V=\pi (4)(5)`

`V=20\pi`

On further simplification we get

`V=62.831853`

`V\approx 62.8`

The volume of right cylinder is 62.8 cubic units.

Therefore, the correct option is B.