The length of one side of the park is 
Explanation:
It is given that the area of the square park is 
The length of one side of the park can be determined using the area of the square formula which is given by

To find the length of one side of the park, we need to substitute the value of the area of the square in the given formula.
Hence, substituting
in the above formula, we get,

Taking square root on both sides of the equation, we get,

Simplifying, we have,

Thus, the length of one side of the square park is 