189 square feet. (multiply square yards by 3 to get square feet)
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12' x 21' (252 square feet) = 28 sq. yards.
(21/3) x (6/3) = 14 square yards
Multiply the two dimensions to get the area. The calculation will give you 189 square feet, which converts to 21 square yards.
Multiply the two dimensions to get the area. The calculation will give you 252 square feet which converts to 28 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