Area = (length) x (width)
168 square-feet = (length) x (12 ft)
Divide each side by 12-ft : (168 sq-ft) / (12-ft) = length
14-ft = length .
Since the carpet has already been ordered and the order
can't be changed, if the room is not 14-ft long, then the
room must be either cut down or added onto.
