There are a couple ways to do this, but basically you need to convert the units.
<span>7 yards x 3 ft/yard = 21 feet </span> <span>4 yards x 3 ft/yard = 12 feet </span> <span>So the area (in sq. ft) will be: </span> <span>21 x 12 </span> <span>= 252 sq. ft. </span>
<span>Alternatively, you can figure the area in square *yards* and then multiply by 9 sq. ft per sq. yard. </span> <span>7 yards x 4 yards x 9 sq. ft/sq. yard </span> <span>= 252 sq. ft.
