document.write( "Question 760080: A river 2 m deep and 20 m wide is flowing at the rate of 5.4 km per
\n" ); document.write( "hour. How much water will fall into the sea in 3 minutes.
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Algebra.Com's Answer #462416 by DrBeeee(684)\"\" \"About 
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The cross section of the river is 2*20 or 40 \"m%5E2\". Now we need to find how many meters the river flows in 3 min, when the rate is 5.4 km per hr.
\n" ); document.write( "Let x = the number of meters the river flows in 3 min
\n" ); document.write( "First convert the rate from km/hr to m/min by
\n" ); document.write( "(1) r = 5.4km*(1000m/km)/((hr)(60min/hr)) or
\n" ); document.write( "(2) r = 5400m/(60min) or
\n" ); document.write( "(3) r = 90 m/min
\n" ); document.write( "Now to find x
\n" ); document.write( "(4) x = 3min*90m/min or
\n" ); document.write( "(5) x = 270m
\n" ); document.write( "The volume, V, of water flowing into the sea is the cross section times the meters it flows in 3 min (our x),
\n" ); document.write( "(6) V = 40\"m%5E2\"*270m or
\n" ); document.write( "(7) V = 10,800\"m%5E3\"
\n" ); document.write( "Answer:The volume of water flowing into the sea in 3 minutes is 10,800\"m%5E3\"
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