Answer
$$43.4\ \ ft^2$$
Work Step by Step
Since $1\ in=2.54 \ cm$ and $1\ ft= 30.48 \ cm$, then we have
$$6250 \ in^2= 6250\times 2.54^2 \ cm^2=\frac{40322.5
}{30.48^2} \ ft^2\\
=43.4\ \ ft^2.$$
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