## Perimeter of a Rectangle

### Perimeter: Learn

Perimeter is the distance around a polygon. When in doubt, you can simply add up all of the sides of the shape.

Since rectangles have opposite equal sides, we can use a shortcut formula.
If *A* is the length and *B* is the width, then

P = 2**A* + 2**B*

or

P = 2*(*A*+*B*)

Example: If a rectangle has side lengths of 6 feet and 5 feet, then the perimeter is 2*(6+5) = 2*11 = 22 feet.

### Perimeter: Practice

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What is the perimeter of a rectangle whose side lengths are feet and feet?

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