A right triangle cylinder has a radius of 3 and a height of 12 what is it's surface area

The surface area of a cylinder can be found by breaking it down into three parts:

Step-by-step explanation:

The two circles that make up the ends of the cylinder.

The side of the cylinder, which when "unrolled" is a rectangle

Combining these parts we get the formula:

area = 2 π r 2 + 2 π r h