116=perimeter
Since the backyard is a perfect square, the two sides are the same. Equation to find dimensions:
2x=116
x=58
To find the area of the backyard multiply x to itself.
58•58=3364
Area of total backyard: 3364 ft^2
Area of pool equation:
900•2=A
A= 1800
The area of the pool is less than the are of the backyard so yes, the pool will fit.