Question

Help me asap. Find the surface area and round to the nearest tenth. Please please help.

Answer 1

164.9
`in^(2)`

Explanation:

To find the surface area of a cylinder, you must use the following equation:

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

The first part of the equation is the circumference of the base circles times the height of the cylinder. This helps you find the surface area of the side.

The second part of the equation is the surface area of the base times 2. This helps you find the surface area of the circles at the top and bottom of the cylinder.

Because you have the measurements, all you have to do is insert them into the equation:

`2\pi (2.5)(8)+2\pi (2.5)^2`

Now simplify:

`40\pi+12.5\pi`

`52.5\pi`

If you are only using 3.14:

164.85

If you are using
`\pi` in your calculator:

164.93

It doesn't matter which way you do it because both answers round to the same number:

164.9