1, square area: 48/4 =12 *12 =144 square meters (calculate the side length of the square according to the perimeter, side length * side length = area).

2. Circular area: 48/3.14 =15.29/2 = 7.65 * 7.65 * 3.14 =183.76 m2 (the diameter is calculated according to the circumference, and the diameter divided by 2 equals the radius. According to the circular area, )

So the area enclosed by the circle is larger.

I hope I can help you and adopt it.