taking the square root of the area. Since the area of the square is 81 in2, the length of one of the sides would be the square root of 81, which is 9 inches.
would we multiply by 4?
No, you do not need to multiply by 4 to find the length of one side of a square given the area. The square root of the area will give you the length of one side. In this case, the square root of 81 in2 is 9 inches, so each side of the square would be 9 inches.
