Question

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

OA
12 inches
OB. 15 inches
OC 21 inches
OD. 40 inches

Answer 1

The answer is:

15 inches

Explanation:

P = perimeter = 42

L = length = ?

W = width = 6

P rectangle = 2L + 2 W

Substitute into formula:

42 = 2L + 2 * 6

42 = 2L + 12

42 - 12 = 2L

30 = 2L

L = 30/2 = 15

L = 15 inches

I hope this helps!!!

Answer 2

Option B: 15 inches

Explanation:

p=2w+2l so 12 (2*6) +2x= 42

42-12=30

30/2=15