21*3 = 63 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.
21*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.
7 × 3 = 21 square feet
It is 2.1875 square feet.
304.5 square feet. This is an easy calculation - just multiply the length in feet by the width in feet. The answer is the number of 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.
Multiply the two dimensions to get the area. The calculation will give you 189 square feet, which converts to 21 square yards.
(21/3) x (6/3) = 14 square yards
357 square feet
21 x 4 = 84 -- There are 84 square feet on the floor. -- There are 84 square feet on the ceiling. -- There are a lot more square feet on the walls, but in order to calculate them, you need to know the height of the room.
21 x 11 = 231 -- There are 231 square feet on the floor. -- There are 231 square feet on the ceiling. -- There are a lot more square feet on the walls, but in order to calculate them, you need to know the height of the room.
21*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.
21 feet by 21 feet is 441 square feet which converts to 49 square yards.
21 square feet.
21 x 4 = 84 square feet.
Just multiply the 21 by the 12 and you have 252 square feet.
21 x 21 = 441 square feet