Explanation:
In 1 centimeter square there are 0.00107639 square feets.
[tex] 1 cm^2=0.00107639 ft^2[/tex]
In 1 hour there 3600 seconds.
1 seconds = 0.000277778 Hours
[tex]1cm^2/s=(x)\times ft^2/h[/tex]..(1)
[tex]1 cm^2/h=\frac{1\times 0.00107639 ft^2}{1\times 0.000277778 h}[/tex]
[tex]=3.975000899 ft^2/h\approx 3.875 ft^2/h[/tex]
On comparing with (1) we get:
[tex]1 cm^2/s=(3.875)\times ft^2/h[/tex]
3.875 is the conversion factor.
