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21*3 = 63 square feet.

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Q: How many square feet is a floor 21 by 3 feet?
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Related questions

How many square yards are there in a floor which is 9 feet long by 21 feet wide?

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.


How many square yards are in a floor which is 9 feet long by 21 feet wide?

Multiply the two dimensions to get the area. The calculation will give you 189 square feet, which converts to 21 square yards.


How many square yards are there if a floor has 6 feet long and 21 feet wide?

(21/3) x (6/3) = 14 square yards


What is the area of a floor 21 feet by 17 feet?

To find the area of a rectangle, you multiply the length by the width. In this case, the length is 21 feet and the width is 17 feet. Therefore, the area of the floor is 357 square feet (21 feet x 17 feet = 357 square feet).


How many square feet in 21 by 11 foot 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.


How many square feet is a 21 by 4 foot room?

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.


How many square feet in a 21' x 21' room?

21*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.


How many square yards is 21 feet by 21 feet?

21 feet by 21 feet is 441 square feet which converts to 49 square yards.


How many square feet in 3 X 7?

21 square feet.


How many square feet are there in 21 feet by 4 feet?

21 x 4 = 84 square feet.


How many square feet is 21 feet by 12feet?

Just multiply the 21 by the 12 and you have 252 square feet.


How many square feet are in a 21 foot x 21 foot room?

21 x 21 = 441 square feet