the formula of the area of the square is
[tex]A=x^2^{}[/tex]
replace the area
[tex]\begin{gathered} 150=x^2 \\ x^2=150 \\ x^2-150=0 \end{gathered}[/tex]
and solve x
[tex]\begin{gathered} x=\sqrt[]{150} \\ x=5\sqrt[]{6}\approx12.25 \end{gathered}[/tex]
the length of a side is 12.25ft
