Respuesta :

[tex]\begin{gathered} \text{area of square = L}^2 \\ \text{where} \\ L=\text{length} \\ \text{area = 87.5 ft}^2 \\ L^2=87.5 \\ L=\sqrt[]{}87.5 \\ L=9.35414346693 \\ L=9.35\text{ ft} \\ L\approx9.4\text{ ft} \end{gathered}[/tex]