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I'm going to assume that you mean the room is 8-ft high.
Floor . . . 480 square feet
Ceiling . . . 480 square feet
Two walls . . . 160 square feet each
Other two walls . . . 192 square feet each
Total square feet of surface area inside the room = (480 + 480 + 320 + 384) = 1,664 square feet
If you're using this number for paint, remember to take off the area of
doors, windows, baseboard heaters, electrical outlets, etc.
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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.
If the perimeter of a room is 32 ft how much sq ft of carpet do i need to cover the floor?
what are the dimensions of the room? Is it square? Assuming it's square, 32ft perimeter means 8 foot walls. 8 foot walls means 64 square feet of flooring. Assuming it's a rectangle with the long wall of 10 feet and the short wall of 6 feet, then it's 60 square feet of flooring.
How many square feet in a 11 foot by 15 foot room?
165 square feet
What is the area in square feet of a 10 foot by 13 foot room?
130 square feet
How do you calculate feet into square feet?
Length mutiplied by width. For example if you a room that is 12 foot by 10 foot then the room is 120 square feet.
