Perimeter of a Rectangle

Look at the image of the shape below. It is a rectangle. If the length of the rectangle is 8 units and the width is 3 units, what is the perimeter of the rectangle?

The perimeter of a rectangle can be calculated using the formula:

$$P = 2(l + w)$$

where:

$P$ = perimeter, $l$ = length, and $w$ = width.