Answer:
The perimeter of a square field is the sum of the lengths of all four sides. Let s be the length of one side of the square. Then, the perimeter P is given by:
P = 4s
We know that the perimeter of the field is 1 1/2 miles, which is equal to 1.5 miles. So we can set up the equation:
4s = 1.5
Dividing both sides by 4, we get:
s = 0.375
Therefore, the length of one side of the square field is 0.375 miles or 1980 feet.