we know that
\(1\) ft is equal to \(12\) in
so
\(9\) ft is equal to
by proportion
\(\frac{1}{12} =\frac{9}{x} \\ \\ x=12*9\\ \\ x=108\) in
therefore
\(9ft-2\frac{1}{2} in=108 in-2.5 in\\ \\ =105.5 in\)
\(105.5 in=105 \frac{1}{2}in\)the answer is
\(105 \frac{1}{2}in\)
