Answer: 25cm
Step-by-step explanation:
Since the field is square we can understand each side is an equal length
This means we just have to use the formula...
[tex]A^2 = 625[/tex]
[tex]\sqrt{a^2} = \sqrt{625}[/tex]
a = ±25
Since it is a real thing, we are only looking at positive values, therefore your answer is
25cm
