Question 748558
Square feet, or any other "square" unit would imply that you are looking for the area.  

The area of a rectangle is given by:

{{{A=l*w}}}

Where A is the area, l is the length and w is the width.  So:

{{{A=l*w}}}

{{{A=10ft*8ft}}}

{{{A=80ft^2}}}