189 square feet. (multiply square yards by 3 to get square feet)
Multiply the two dimensions to get the area. The calculation will give you 252 square feet which converts to 28 square yards.
(21/3) x (6/3) = 14 square yards
8 ft X 8 ft. is 64 sq. feet = 21 yards ( 3 feet are in a yard)Yars are 3 feet so they technically can't be square 21 yards and 1 yard on the side extra
78.2 yards
Each foot is 12 inches; therefore 21 ft = 21 X 12 in. = 252 in.
Total square yards: 16.0
9' x 12' (108 square feet) = 12 square yards.
21 feet by 21 feet is 441 square feet which converts to 49 square yards.
21 x 21 x 6/12 = 220.5 cubic feet. At 27 cu ft per yard that is a little over 8 yards, or 8.2 yards
pie7 yards
There are 21 feet in 7 yards, not yeards.
7 yards is equal to 21 feet.
12 feet X 21 feet / 9 sq feet/sq yard = 28 sq yards
(12-ft x 21-ft) / (9 square feet per square yard) = 28 square yards
There are 3 feet in one yard. Therefore, 21 feet is equal to 21 / 3 = 7 yards.
21 square yards = 189 square feet.