It is mentioned that our figure is a rectangle. The perimeter of rectangle is sum of twice the length and twice the width. The given perimeter is 180 feet and has a width of 30 1/4 feet. We can write the equation as:
P = 2L + 2W
180 = 2L + 2(30.25)
180 = 2L + 60.5
180 – 60.5 = 2L
119.5 = 2L
L = 59.75 ft.
The length will be 59 3/4 ft