document.write( "Question 861491: A closed rectangular box has a surface area of 1440 square cm. The length of the box is twice its width and the height is six times its width. What is the volume of the box?\r
\n" ); document.write( "\n" ); document.write( "The answer I got was 2484.65 which doesn't seem right.
\n" ); document.write( "2LW+2LH+2WH = 1400
\n" ); document.write( "(2x*x)+ (2x*6x)+ (x*6x) = 700
\n" ); document.write( "2x^2 + 12x^2 + 6x^2 = 700
\n" ); document.write( "20x^2 = 700
\n" ); document.write( "divide by 20
\n" ); document.write( "x^2 = 35cm
\n" ); document.write( "x= 5.916 (?) X is width
\n" ); document.write( "length is 2X
\n" ); document.write( "height is 6X
\n" ); document.write( "volume is L*W*H
\n" ); document.write( "

Algebra.Com's Answer #519066 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
You wrote your constant wrong but other than that your solution is correct.
\n" ); document.write( "\"2LW%2B2LH%2B2WH=1440\"
\n" ); document.write( "\"LW%2BLH%2BWH=720\"
\n" ); document.write( "\"%282W%29W%2B2W%286W%29%2BW%286W%29=720\"
\n" ); document.write( "\"2W%5E2%2B12W%5E2%2B6W%5E2=720\"
\n" ); document.write( "\"20W%5E2=720\"
\n" ); document.write( "\"W%5E2=36\"
\n" ); document.write( "\"W=6\"
\n" ); document.write( "\"L=2%286%29=12\"
\n" ); document.write( "\"H=6%286%29=36\"
\n" ); document.write( "\"V=L%2AW%2AH=12%2A6%2A36=2592\"\"cm%5E3\"
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