we know that
the area of a square is equal to
\(A=b^{2}\)
where
b is the length side of the square
so
In this problem
\(A=450 in^{2}\)
\(A=b^{2} \\ b^{2}=450\\ b=\sqrt{450} \\ b=15\sqrt{2} in\)
therefore
the answer is
length of a square is equal to \(15\sqrt{2} in\)
