# Pre-Algebra Examples

The surface area of a cone is equal to the area of the base plus the area of the cone.

Substitute the values of the length and height into the formula. Pi is approximately equal to .

Multiply by .

One to any power is one.

Raise to the power of .

Add and .

Apply the distributive property.

Multiply by .

The result can be shown in multiple forms.

Exact Form:

Decimal Form: