He length of a rectangle is 12 in. And the perimeter is 56 in. Find the width of the rectangle. A. 21 in. B. 22 in. C. 32 in. D. 16 in.

Question

asked Jun 2, 2019 123k views

1 Answer

Yarbelk · Answer 1 · 2019-06-06T08:21:57+0000

The formula of a perimeter of rectangle:

P = 2(w + l)

We have l = 12 in and P = 56 in.

Substitute:

2(w + 12) = 56 use distributive property

(2)(w) + (2)(12) = 56

2w + 24 = 56 subtract 24 from both sides

2w = 32 divide both sides by 2

w = 16