Answer:
Area of rectangle is equal to multiply the length by width
i.e [tex]A = l\times w[/tex] .....[1]
where
A is the area of rectangle ,
l is the length and
w is the width of the rectangle respectively.
Given : Area of rectangular do pen(A) = [tex]8\frac{1}{2} = \frac{17}{2}[/tex] square feet and width(w) = [tex]3\frac{2}{5} = \frac{17}{5}[/tex] feet.
To calculate the length in feet.
Substitute the given values in [1], we get
[tex]\frac{17}{2}= l\times \frac{17}{5}[/tex]
Multiply both sides by [tex]\frac{5}{17}[/tex] we get;
[tex]l = \frac{17}{2} \times \frac{5}{17} =\frac{5}{2} = 2\frac{1}{2}[/tex] feet.
Therefore, the length in feet is, [tex]2\frac{1}{2}[/tex]
