Question 971876
The diagonal of a square is side *sqrt (2)


250 feet of rope/sqrt (2) =176.8 ft.  ; This answers the assumed question of how long is the side of the parking lot?




The sides are s 
the diagonal is 2 sqrt (2)

If diagonal is s
side is s/sqrt (2)

Proof by a 1;; 1;; sqrt 2 triangle (45-45-90) using Pythagorean theorem.