Question

The perimeter of a rectangular pool is 216 feet. The length of the swimming pool is 3

times longer than the width. Find the length and the width of the swimming pool.

Answer 1

l = 81

w = 27

Explanation:

l = 3x (x2)

w = x (x2)

l = 6x (has two sides so we x2)

w = 2x

6x + 2x = 8x

8x = 216

x = 27 (divide both sides)

w = 27

l = 27 x 3 = 81 (length is 3x bigger than width)

81 + 81 + 27 + 27 = 216