A park has a walking path in the shape of a rectangle. The side by a lake is 180 meters. The walking path also has a 200-meters long diagonal that takes walkers to a basketball court. How long is the side adjacent to the side by the lake?

The answer is A(87).I just plugged the numbers into the Pythagorean Theorem. 200^2 - 180^2 = the square root of 7,600, which equals about 87.