# Basic Math Examples

The surface area of a cylinder is equal to the sum of the areas of the bases each having an area of , plus the area of the side. The area of the side is equal to the area of a rectangle with length (the circumference of the base) times the height.
Substitute the values of the radius , the height , and an approximation for into the formula.
Simplify each term.
Move .
Use the power rule to combine exponents.