There are 9 square feet in 1 square yard - so 15 square yards contains 9 x 15 = 135 square feet.
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20 square yards
1 yard = 3 feet, therefore 15 yards = 45 feet
15 square feet
12 inches= 1 foot, so-180 inches in feet= 180 inches/ 12 inches= 15 feet.1 yard= 3 feet, so 15 feet in yards= 15 feet/ 3 feet= 5 yards
It is 2.1875 square feet.