Question

The perimeter of a rectangle swimming pool is 160 feet. The length of the swimming pool is four times its width . Find the dimensions of the swimming pool.

Answer 1

The length of the swimming pool is 64 feet long, and the width is 16 feet long. So the pool is 64' by16'

Answer 2

Formula for Perimeter of Rectangle:

P = 2(L + W)

Plug in 160:

160 = 2(L + W)

L = 4W
So we can plug in '4W' for 'L' in the first equation.
160 = 2(L + W)

160 = 2(4W + W)

Combine like terms:

160 = 2(5W)

160 = 10W

Divide 10 to both sides:

W = 16

Now we can plug this back into any of the two equations to find the length.

L = 4W

L = 4(16)

L = 64

So the width is 16, and the length is 64.