Answer:
One side of the field = 3.162 miles.
Step-by-step explanation :
Given : A square field has an area of 10 square miles.
To find : One side of the field.
Solution : Formula of area of square =

And we know the area A= 10 square miles.




Nearest thousandth → s= 3.162
Therefore, one side of the field = 3.162 miles.