Question

The perimeter of a rectangle is 53 inches. The combined length of the two shorter sides is 18 inches. What is the length of each of the longer sides? Complete the sentences to write an equation to model this problem.

Answer 1

perimeter of a rectangle : 2(l+b)
so, 118 = 2 (l+23),
118 = 2l + 46,
118 - 46 = 2l
72 = 2l
72/2 = l
36 cm = l