document.write( "Question 44745: Dear Sir,
\n" ); document.write( " MY friend had done this but I can't really understand what he had written.\r
\n" ); document.write( "\n" ); document.write( "The cross-section of a drain is a rectangle 30 cm wide. If the water 3.5 cm deep flows along the drain at a rate of 22 cm per second, how many litres of water will flow through each minute ?\r
\n" ); document.write( "\n" ); document.write( "Volume = width x depth x height \r
\n" ); document.write( "\n" ); document.write( "(width and depth are given namely 30 and 3.5 as for the height is the water flows along the drain is consider its length, in this case, 22 ? (Am I right ?)\r
\n" ); document.write( "\n" ); document.write( "If this is true, volume per second = 30 x 3.5 x 22 = 2310 cm^3
\n" ); document.write( "Therefore, volume per minute = 2310 x 60 = 138600
\n" ); document.write( "Since the answer is required in litres thus 138600 cm^3 = 138 600/1000 = 138.6 litre.\r
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\n" ); document.write( "\n" ); document.write( "Thank you.
\n" ); document.write( "

Algebra.Com's Answer #29593 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
I didn't check your arithmetic but
\n" ); document.write( "the logic looks right.\r
\n" ); document.write( "\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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