# Length of a Rectangle

Suppose that the width of a rectangle is 5 inches shorter than the length and that the perimeter of the rectangle is 50 inches. The formula for the perimeter of a rectangle is P=2L+2W.

a) Set up an equation for the perimeter involving only L, the length of the rectangle.

Answer:

b) Solve this equation algebraically to find the length of the rectangle. Find the width as well.

Answer: Length ______, Width ______

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#### Solution Preview

Suppose that the width of a rectangle is 5 inches shorter than the length and that the perimeter of the rectangle is 50 inches. The formula for the perimeter of a rectangle is P=2L+2W.

a) Set up an equation ...

#### Solution Summary

This solution explains how to solve for the length of a rectangle given the perimeter and an equation relating the length to the width.