Posted by Linda on .
A city planner has placed a square wading pool in the center of a park. The pool is surrpunded by a square fence, 20 meters wide. The tiles for the floor of the wading pool cover 121 sqaure meters. How wide is the wooden deck sprrounding the wading pool?

math 
Damon,
sqrt(121) = 11
so pool is 11 by 11
11 + 2w = 20
2w = 9
w = 4.5