Bhanu Chaudhary
Poll
Professional
Asked: 2022-03-09T10:04:00+05:30

A cylindrical cistern of diameter 25 cm is full of water. If 11 litres of water is drawn off, the water level in the cistern will drop by? (use π=22/7

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A cylindrical cistern of diameter 25 cm is full of water. If 11 litres of water is drawn off, the water level in the cistern will drop by? (use π=22‎/7

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    1 Answer

    1. Professional
      1. Correct Answer: 22 2/5cm

      Volume of cistern=πr2h

       

      πr2×h=11000cm3

       

      22/7×25/2×25/2×h=11000cm3

       

      h=11000×7×2×2/22×25×25

       

      h=28×4/5=112/5=22 2/5cm

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