The width of a rectangle is one half its length. The perimeter of the rectangle is 54 centimeters. What are the width and length of the rectangle?

Tomi:

let the width be W. Then, reading the problem, the length is 2W. The perimeter, P, say, is the sum of all sides. Hence P = W + 2W + W + 2W = 6W. We are given that P = 54. So 6W = 54. W = 54/6 = 9. The width is 9 cm.

Dattaprabhakar (Dr. G.)