12' x 21' (252 square feet) = 28 sq. yards.
189 square feet. (multiply square yards by 3 to get square feet)
(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
Multiply the two dimensions to get the area. The calculation will give you 189 square feet, which converts to 21 square yards.
(12-ft x 21-ft) / (9 square feet per square yard) = 28 square yards
Total square yards: 16.0
12' x 21' (252 square feet) = 28 sq. yards.
9' x 12' (108 square feet) = 12 square yards.
21 feet by 21 feet is 441 square feet which converts to 49 square yards.
Square feet measure area, and yards measure length. If you mean FEET in 21 yards, the answer is 63 (3 times 21). If you mean square feet in 21 SQUARE YARDS, the answer is 189 (three times three times 21).
21 square yards = 189 square feet.
189 square feet. (multiply square yards by 3 to get square feet)
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.
I will answer this by first converting the measurements to yards, but you could also calculate the area in feet and then convert to square yards when finished (as I will also show). There is no right or wrong way to do it.12 feet = 12/3 = 4 yards21 feet = 21/3 = 7 yardsThus the area of the room = 4 * 7 = 28 square yards.The other way to calculate this is to work in feet initially, thus 12 * 21 = 252 square feet. 1 square yard = 3 * 3 = 9 square feet. Thus the area = 252/9 = 28 square yards.
18 feet is 6 yards, and 21 feet is 7 yards. 6 multiplied by 7 is 42. Therefore, it's 42 square yards.
21 square feet