A rectangular swimming pool is twice as long as it is wide. A small concrete walkway surrounds the pool. The walkway is a constant 2 feet wide and has an area of 196 square feet. Find the dimensions of the pool.

2 answers

(w+4)(2w+4)-w(2w) = 196

Solve for w, and then you figure the length, 2w.
A large swimming pool has a perimeter of 1,102 meters, this rectangular-shaped pool is 40 meters longer than 6 times its width. Find its dimensions