What is the surface area of the cylinder if it has a radius of 4 and a height of 18

Question

asked Dec 8, 2021 41.7k views

1 Answer

Effbiae · Answer 1 · 2021-12-11T21:16:59+0000

Given:

The diameter of the cylinder is 8 cm.

The radius of the cylinder is 4 cm.

The height of the cylinder is 18 cm.

We need to determine the surface area of the cylinder.

Surface area of the cylinder:

Let us determine the surface area of the cylinder.

The surface area of the cylinder can be determined using the formula,

$SA=2 \pi r(r+h)$

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

Substituting r = 4 and h = 18 in the above formula, we get;

$SA=2 \pi (4)(4+18)$

$SA=2 \pi (4)(22)$

$SA=176 \pi$

Thus, the surface area of the cylinder is 176π cm²

Hence, Option d is the correct answer.