document.write( "Question 1114432: A rectangular prism has sides that are in the ratio of 3:5:9. If the volume of the prism is 8640 cm^3, then what is the surface area of the prism, in square millimeters? \n" ); document.write( "

Algebra.Com's Answer #729389 by Fombitz(32388) $\"\"$ $\"About$

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$\"%283x%29%285x%29%289x%29=8640\"$
\n" ); document.write( " $\"x%5E3=64\"$
\n" ); document.write( " $\"x=4\"$
\n" ); document.write( "So the width, height, and length are,
\n" ); document.write( " $\"W=3%2A4=12\"$
\n" ); document.write( " $\"H=5%2A4=20\"$
\n" ); document.write( " $\"L=9%2A4=36\"$
\n" ); document.write( "The surface area of the prism is,
\n" ); document.write( " $\"SA=2%2AL%2AH%2B2%2AL%2AW%2B2%2AW%2AH\"$
\n" ); document.write( " $\"SA=2%2A36%2A20%2B2%2A36%2A12%2B2%2A12%2A20\"$
\n" ); document.write( "Work that out for the answer in $\"mm%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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