document.write( "Question 489555: The amount Q of water emptied by a pipe varies directly as the square of the diameter d. A pipe 5 inches in diameter will empty 225 gal of water over a fixed perid of time. How many gallons of water are emptied when the diameter is 9 inches? \n" ); document.write( "
Algebra.Com's Answer #333684 by chessace(471)\"\" \"About 
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x / 9^2 = 225 / 5^2
\n" ); document.write( "x = 81 * 9 = 729 gal.
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