Question

The perimeter of a rectangle is 42 inches. If the width of the rectangle is 6 inches, what is the length?

A. 36 inches
B. 21 inches
C. 15 inches
D. 30 inches

Answer 1

The length is 15 inches.

Explanation:

Perimeter of rectangle = 2L + 2W

If W = 6, then 2W = 2*6, which is 12.

Now, 2L + 12 = 42.

Solve for L.

2L + 12 = 42

2L = 30

L = 15