Find the area of a square park if the length of a side is 300 meters

To find the area of a square, you simply square the length of one of its sides.

In this case, the length of one side of the square park is 300 meters.

Area = (side length)^2
Area = 300 meters x 300 meters
Area = 90,000 square meters

Therefore, the area of the square park is 90,000 square meters.