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Math and Arithmetic
Interior Design
Geometry
Area

How do you get square feet?

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May 08, 2011 8:41PM

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This below is to find the square footage for painting a room.

Take the perimeter (the length in feet around the room) then multiply it by the height of the ceiling. The ceiling, which is like a 5th wall that you look up at, is measured by length X width. Same thing with the floor. Subtract about 28 sq feet per normal size door. Always get a little more paint to make sure you get the project done correctly.

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If the room is not a complete square, like if it has jogs in it then you want to find each box seperately by multiplying the length of the room by the width. Do this for every jog in the room then subtract each jogs' sq/ft from the sq/ft of the entire room and that with give you the rooms final sq/ft.

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Very simple - measure one side, then measure the side next to it and multiply one by the other.

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measure LENGTH x WIDTH = square footage

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It is very simple if the sides envolved are say a square or rectangle. If the area has for example an angular wall, measure and calculate the rectangle areas first. To get the square footage of the floor at the angled wall, measure the length and width as if the diagonal wall split your rectangle from oposite corners of your rectangle. In other words: length times width divided by two equals the square footage of this area. Then add it to all your other calculated rectangles.