We have that the given area of the square is 15 in^2
In this case we need to remember the formula to calculate the area of a square
[tex]A=s^2[/tex]
where A is the area and s the length of the side
We substitute
[tex]15=s^2[/tex]
Therefore
[tex]s=\sqrt[]{15}[/tex]
ANSWER
side length= sqrt(15)
[tex]\text{side length=}\sqrt[]{15}[/tex]
