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water is flowing at us the rate of 15 km per hour through a pipe of diameter 14 cm into a cuboidal. Which 50 m long and 44 m wide in what time will the level of the water in the pond will rise by 21 CM

    • Posted by Prateek Pandey 6 years, 11 months ago

    CBSE > Class 10 > Mathematics
    • 3 answers

    Ram Kushwah 6 years, 11 months ago

    Volume of water in cuboid

    =50×44×21/100=462 M3…...(1)

    Let after t hrs  the level goes up 21 cm, so water length l=15×1000×t=15000 t m

    Vol of water flowing =22/7×7×7×15000t/(100×100)=231t m3…....(2)

    From (1) and (2)

    231 t=462

    t =2 hr

     

    0Thank You

    Oviya Oviya 6 years, 11 months ago

    Method Bigger volume÷smaller volume

    1Thank You

    Oviya Oviya 6 years, 11 months ago

    2 hrs

    1Thank You

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