Question

The rain water collected on the roof of a building , of dimensions 22m x 20m is , drained into a cylindrical vessel having base diameter 2m and height 3.5m .If the vessel is full up to the brim, find the height of rain-water on the roof . ( use pie as 22/7)

please explain me with steps thank u.

Answer 1

Let height of water on the roof be h

So, Volume of water on roof  = 22*20h = 440h

And, Volume of water in cylinder vessel  =  22/7*1*1*7/2 
                                                                 = 11 m³

But Volume of water is same

So, 11 = 440h
    so, h = 11/440
          h = 1/40 m = 0.025 m

Hence,  the height of rain-water on the roof = 0.025 m

Answer 2

Thus so

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