# The swimming pool

### Completing the Square Poster, Mr. Kirkland, October 14

A rectangular swimming pool is 10 ft deep. One side of the pool is 1.5 times longer than the other. The amount of water need to fill the pool is 3840 cubic feet. Find the dimension of the pool.

Write an equation for the volume of the pool in terms of x.

Simplify the left side by multiplying.

Isolate x squared.

Find the positive square root

Find the longer side of the pool by plugging it back in.

The pool is 16 feet by 24 feet long.