Question

Please help me!!!
The length of a rectangle is 7 inches more than its width. If the perimeter of the rectangle is 66 inches. Find it’s dimensions.

Answer 1

Perimeter = 2 times the width + 2 times the length

               = 2(w + 7) + 2w     where w = width

2(w + 7) + 2w = 66

4w + 14 = 66

4w = 66-14 = 52

w = 52/4 = 13

length = 13 + 7 = 20  

width = 13 and length = 20