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Grade: 8 
        The rainwater which falls on the roof 18m long and 16.5m wide is stored in a cylindrical tank of radius 4m. If its rains 10 cm on a day, what is the rise in the waterlevel in the tank due to it?
one year ago

Answers : (1)

Arun
19778 Points 
							
Dear Anil
Let h be the height of water in the tank after the rain water is collected.
so
vol of water on the roof = vol of water in tank
vol of water on the roof=18 X 16.5 X 0.1 cu meter
vol of water in the tank =3.14 X 4 X 4 X h
so, ATQ
18 X 16.5 X 0.1=3.14 X16 X h
Solve and get the value of h.
h = 0.5911 m
Regards
Arun (askIITians forum expert)
one year ago
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