A rectangle has a perimeter of 84 inches. The length of the rectangle is 28 inches.

What is the width of the rectangle?

width of rectangle is 3 inches

W = 14 inches

Step-by-step explanation:

Perimeter of a rectangle

= 2 (L + W)

Where

L = length

W = width

Given

Perimeter = 84 inches and

Length = 28 inches

Width = ?

Therefore,

84 = 2 (28 + W)

Expand the bracket

84 = 2 x 28 + 2 x w

84 = 56 + 2w

Subtract 56 from both sides

84 - 56 = 56 - 56 + 2w

28 = 2w

Divide both sides by 2

28/2 = w

W = 14 inches

The width of the rectangle is 14 inches