Question

The perimeter of a rectangle is 40 inches. If the width of the rectangle is 6 inches, what is the length?

A. 14 inches
B. 34 inches
C. 20 inches
D. 28 inches

Answer 1

The length would be A. 14 inches

Answer 2

Perimeter of a rectangle = 2(l + w)

l = length.

w = width

In this problem,

Perimeter = 40

w = 6

l = ?

Plug our numbers in.

40 = 2(l + 6).

Divide each side by 2.

20 = l + 6.

Subtract 6 from both sides.

14 = l

The length is 14 inches