Respuesta :

ANSWER

[tex]40feet[/tex]

EXPLANATION

Given;

[tex]\begin{gathered} Area=1600ft^2 \\ width=40ft \end{gathered}[/tex]

Recall that the area is calculated using;

[tex]area(ft^2)=lenght(ft)\times width(ft)[/tex]

Substitute the values;

[tex]\begin{gathered} area(ft^2)=lenght(ft)w\imaginaryI dth(ft) \\ 1600=l\times40 \\ l=\frac{1600}{40} \\ =40 \end{gathered}[/tex]