document.write( "Question 33578: Could you explain this to me?:\r
\n" ); document.write( "\n" ); document.write( "How many liters of paint are needed to paint the walls of a rectangular prism-shaped room that is 6m x 4m x 2.5m if 1 L of paint covers 20 m2? (assume there are no doors or windows)\r
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Algebra.Com's Answer #19997 by Cintchr(481)\"\" \"About 
You can put this solution on YOUR website!
With a room of the l, w, and h of 6m, 4m, 2.5m you have four walls
\n" ); document.write( "Two walls are 6 x 4
\n" ); document.write( "Two walls are 6 x 2.5
\n" ); document.write( "First find the total area
\n" ); document.write( "\"+W1+%2B+W2+%2B+W3+%2B+W4+=+AREA+\"
\n" ); document.write( "\"+%286%2A4%29+%2B+%286%2A4%29+%2B+%286%2A2.5%29+%2B+%286%2A2.5%29+=+AREA+\"
\n" ); document.write( "\"+2%286%2A4%29+%2B+2%286%2A2.5%29+=+AREA+\"
\n" ); document.write( "\"+2%2824%29+%2B+2%2815%29+=+AREA+\"
\n" ); document.write( "\"+48+%2B+30+=+AREA+\"
\n" ); document.write( "\"+78+=+AREA+\"\r
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\n" ); document.write( "\n" ); document.write( "Now, knowing that l Ltr of paint covers 20 sq metres .... divide\r
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\n" ); document.write( "\n" ); document.write( "\"+78%2F20+=+3.9+\"
\n" ); document.write( "But since you cant buy .9 of a can of paint, you will need to buy 4 FULL cans.
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