The area of a rectangle can be calculated with this formula:
[tex]A=lw[/tex]Where "l" is the length of the rectangle and "w" is the width.
Let's make the conversion from 9 inches to feet. Knowing that:
[tex]1ft=12in[/tex]You get:
[tex](9in)(\frac{1ft}{12in})=0.75ft[/tex]So you can set up that the length 17 feet 9 inches is:
[tex]l=17.75ft[/tex]And the width 11 feet 9 inches is:
[tex]w=11.75ft[/tex]Therefore, substituting values, you get that the area of the rectangle is:
[tex]A=(17.75ft)(11.75ft)=208.56ft^2[/tex]The area of the rectangle rounded to the nearest square foot, is:
[tex]A\approx209ft^2[/tex]