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1 square foot is 0.111 square yards. The floor area is 9feet x 21feet = 189 square feet. Therefore, the total square yards is: 189 square feet x 0.111 square yards/foot squared = 21 square yards Therefore, there is 21 square yards of floor.
9feet
7040 yards 7040 yards
6.666666666666666666666666666666666666666666666666 yards.
1968.5 yards