## How to Solve Perimeter of Rectangle Word Problems

The perimeter of a polygon is the sum of all the lengths of its sides. Since a rectangle has two pairs of sides, if we call the longer side length and the shorter side width, then

Perimeter = length + length + width + width.

We can shorten this formula if we let $P$ be the perimeter, $l$ be the length and $w$ be the width:

$P = l + l + w + w$

$P = 2l + 2w$.

You see, you don’t have to memorize the formula as long as you know the concept and you know the shape of the polygon. In some of the examples, below, I did not show use the shorter formula since they can be solved intuitively. Continue Reading