Since you are given the width of 5/8 of the length, I will assume that
the figure is a rectangle. Let us represent W as the width and L as the length.
So we have W = 5/8L. then we are also given the area of the rectangle at 360
square feet. The area of the rectangle is represented by the formula A = LxW.
A = LxW
360 square feet = L(5/8L)
L^2 = 576 square feet
L = 24 feet