Length times width. If you have something 2 feet long by 2 feet wide it is 4 square feet.
A foot is one dimensional measurement.
A square foot is 2-dimensional and is a square unit footxfoot....
Square feet means a flat area. Feet means a line measure. One square foot is an area equal to a square that measures one foot on each side. A rectangle measuring 6 inches by 2 feet would also contain...