document.write( "Question 486859: how to find the surface area of a room that measures 21 ft X 24ft X 10 ft \n" ); document.write( "
Algebra.Com's Answer #332837 by checkley79(3341)\"\" \"About 
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SA=2(21*10)+2(24*10)
\n" ); document.write( "SA=2*210+2*240
\n" ); document.write( "SA=420+480
\n" ); document.write( "SA=900 FT^2 ANS.
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