document.write( "Question 153974: We need to figure out the surface area of a room so we can figure out how much paint to use and howmuch is it going to cost \n" ); document.write( "

Algebra.Com's Answer #113339 by Fombitz(32388) $\"\"$ $\"About$

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Let's assume the room is a rectangle with sides L and W. The room is also H high.
\n" ); document.write( "To calculate the surface area,SA, of the walls you would find the perimeter of the room and multiply by the H.
\n" ); document.write( " $\"P=2L%2B2W\"$
\n" ); document.write( " $\"SA=PH\"$
\n" ); document.write( " $\"SA=H%282L%2B2W%29\"$
\n" ); document.write( "If you're painting the ceiling, you would add another $\"LW\"$ worth of area (area of a rectangle).
\n" ); document.write( "If you're painting the floor too, that would add another $\"LW\"$ worth of area. \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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