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A pool of water with surface area of 0.6 hectares has a uniform depth of 3 metres.A pipe drains water in the pool at the rate of 200 litres per second.How much hours does it take to empty the pool?

  • math -

    area * depth = volume
    time = volume/volume rate

    1 hectare = 1000 m^2
    1 liter = 10^-3 m^3
    1 hr = 3600 seconds
    so
    time in hours = .6hec(10^3m^2/hec)*3m/(200 L/s *1m^3/10^3 L * 3.6 *10^3 s/h)

    = .6*3/(200*3.6) *10^3

    = 0.5 hr
    check my arithmetic




    200 l/s * t =

  • math -

    0.6*10000
    6000m 3*200=600

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