Question

Find the total surface area of this cylinder.

Give your answer to 1 decimal place.
24 cm
18 cm

(it's not 2262 or 2021.9 I've already tried those)​

Answer 1

Explanation:

1. Find the circumference of the cylinder: C = 2πr

2. Multiply this result by the height of the cylinder: A = 2πr·h

3. To this result add the surface areas (there are two) of the ends of the cylinder: 2πrh + 2πr²

This is the correct general formula for the surface area of a cylinder of radius r and height h. If you want specific numbers, please share the values of r and h.