one square yard equals nine square feet. So in maths terms you divide (13.5 times 11.5) which equals 155.25 sq yards. by nine and the answer is 17.25 sq yards. but if you covering a floor then you will most likely need eighteen sq yds.

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.

32.11 square yards. * * * * * * * -- 321/9 square yards on the floor -- another 321/9 square yards on the ceiling -- more square yards on the walls, but in order to count them, you have to know the height of the ceiling above the floor.

An acre is traditionally a field that could be plowed in one day using oxen. It was 220 yards long and 22 yards wide, so its area is 22 x 220 = 4840 square yards Also, an acre equals 43,560 square feet. A square yard equals 9 square feet. An acre equals 4840 square yards (43,560 divided by 9)