30 inches by 5 feet = 12.5 square feet.
30 inches by 10 feet = 25 square feet.
5 square feet
15 square feet.
Approximately 23.3 square feet.
7.5 square feet.
3.75 square feet
30 * 36 = 1080 square inches = 1080/144 = 7.5 sq. feet.
10 square feet.
3 x 30 = 90 square feet. 1 square foot = 144 square inches (12 x 12) So 90 square feet = 12,960 square inches
30 feet by 28 feet equals 840 square feet. 30 inches by 28 inches equals 840 square inches, or 5.833 square feet.
51 inches wide x 30 inches long = 10.625 square feet.