document.write( "Question 974615: A cube-shaped water canister has sides of 90cm and weighs 135kg when it's full. How much would it weigh if it had sides of 30 cm? \n" ); document.write( "
Algebra.Com's Answer #596481 by josgarithmetic(39620)\"\" \"About 
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Full or empty or between full and empty?\r
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\n" ); document.write( "\n" ); document.write( "If full, then the area controls the mass for the canister, and the volume controls the mass for the water.\r
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\n" ); document.write( "\n" ); document.write( "The big canister weights 135 kilograms. You still have a proportion.
\n" ); document.write( "\"%286%2A30%2A30%29%2F%286%2A90%2A90%29\" is what you really have as a conversion.\r
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\n" ); document.write( "\n" ); document.write( "Same as \"9%2F81=1%2F9\".\r
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\n" ); document.write( "\n" ); document.write( "\"n%2F135=1%2F9\"\r
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\n" ); document.write( "\n" ); document.write( "\"n=135%2F9\"\r
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\n" ); document.write( "\n" ); document.write( "n=15 kg.
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