Question

The volume of a cylinder is 225 cm and its height is 9 cm.

What is the length of the cylinder's radius?
9cm
10cm
7cm
5cm

Answer 1

It’s none of the above over here, since the radius is 2.82

Explanation:

Answer 2

The radius of the cylinder is 2.82 cm.

Explanation:

The volume of a cylinder is computed using the formula:

`Volume=\pi r^(2)h`

Here r is the radius and h is the height.

Consider the diagram below.

The volume is 225 cm³ and height is 9 cm.

Determine the radius as follows:

`Volume=\pi r^(2)h\\r^(2)=(Volume)/(\pi * h) \\r=\sqrt{(Volume)/(\pi * h)}\\=\sqrt{(225)/(3.14* 9) } \\=2.8204\\\approx2.82 cm`

Thus, the radius of the cylinder is 2.82 cm.

None of the provided options is correct.