document.write( "Question 1012356: A pipe has a cross sectional area of 50cmsq. Water is flowing through the pipe at a speed of 25 cm/sec. The pipe is used to fill up a cuboidal tank whose inner dimensions are 1m* 0.8m*0.2m. How many minutes will it take for the tank to be completely full? \n" ); document.write( "

Algebra.Com's Answer #628264 by rothauserc(4718) $\"\"$ $\"About$

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The flow rate is equal to flow area times the flow velocity
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\n" ); document.write( "we are given the flow area = 50cm^2 and the flow velocity = 25 cm/sec, therefore
\n" ); document.write( "the flow rate = 50cm^2 * 25 cm/sec = 1250cm^3/sec
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\n" ); document.write( "Convert the dimensions of the cuboidal tank to cm
\n" ); document.write( "1m * 0.8m * 0.2m = 100cm * 80cm * 20cm
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\n" ); document.write( "Calculate the volume of the cuboidal tank in cm
\n" ); document.write( "Vcm = 100 * 80 * 20 = 160000cm^3
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\n" ); document.write( "now divide Vcm by the flow rate to determine how many seconds to fill the tank
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\n" ); document.write( "(160000cm^3/sec) / 1250cm^3 = 128 seconds
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\n" ); document.write( "now divide 128 seconds by 60 seconds in a minute to determine how many minutes to fill the tank
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\n" ); document.write( "128 / 60 = 2.133333333 minutes approx 2.1 minutes
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