What is the formula for the area of a cylinder?

2 pi*r^2 + 2 * pi * r * h

Step-by-step explanation:

I will assume that you are looking for surface area

We need to find the area of the top and the bottom, which is the area of a circle

top: pi * r^2

Bottom: pi r^2

Then the side which is the circumference times the height (it is a rectangle)

side: 2 * pi * r * h

Add them together to get the surface area

SA = pi * r^2 + pi * r^2 + 2 * pi * r * h

= 2 pi*r^2 + 2 * pi * r * h