Block-shaped 17203

A block-shaped pool with bottom dimensions of 12 m and 20 m and a depth of 2 m is filled with two pipes. The first pipe flows 6 l of water per second, the second 2.4 hl per minute. How many hours and minutes will the pool be filled 40 cm below the edge?


t = 10:40 hh:mm Wrong answer

Step-by-step explanation:

a=12 m b=20 m c=2 m c2=40 cm m=40:100  m=0.4 m  V1=6 l m3=6:1000  m3=0.006 m3 V2=2.4 hl m3=2.4:10  m3=0.24 m3  Q1=V1=0.006=5003=0.006 m3/s Q2=V2/60=0.24/60=2501=0.004 m3/s  V=a b (cc2)=12 20 (20.4)=384 m3  t1=V/(Q1+Q2)=384/(0.006+0.004)=38400 s  t=t1 h=t1:3600  h=38400:3600  h=10.667 h=10.66667=10:40 hh:mm

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