What is the length and width of the rectangle?

Question

The length of a rectangle is 6cm longer than the width. The perimeter of the rectangle is 92cm

Answer 1

L = 6 + W

P = 2(L + W) = 92 cm

Substitute Eq 1 into the perimeter equation, you get

2(6 + W + W) = 92

2(6 + 2W) = 92

12 + 4W = 92

4W = 80

W = 80 / 4 = 20 cm

L = 6 + W = 6 + 20 = 26 cm