Answer:
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
