document.write( "Question 760080: A river 2 m deep and 20 m wide is flowing at the rate of 5.4 km per
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document.write( "hour. How much water will fall into the sea in 3 minutes. \n" );
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Algebra.Com's Answer #462416 by DrBeeee(684)![]() ![]() ![]() You can put this solution on YOUR website! The cross section of the river is 2*20 or 40 \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 \n" ); document.write( "(7) V = 10,800 \n" ); document.write( "Answer:The volume of water flowing into the sea in 3 minutes is 10,800 \n" ); document.write( " \n" ); document.write( " |