Question

SA = 2tr2 + 2trh

(Use 3.14 for 1.) 5 in.
30 in.
Find the surface area.
square inches
Do NOT round your answer.

Answer 1

Given:

Radius of the cylinder = 5 in

Height of the cylinder = 30 in.

To find:

The surface area of the cylinder.

Solution:

The surface area of the cylinder is:

`SA=2\pi r^2+2\pi rh`

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

Putting
`r=5,h=30,\pi=3.14` in the above formula, we get

`SA=2(3.14)(5)^2+2(3.14)(5)(30)`

`SA=2(3.14)(25)+942`

`SA=157+942`

`SA=1099`

Therefore, the surface area of the cylinder is 1099 square inches.