Question

The rain falls 10cm on a particular day. The rain
water that falls on a roof 70 m long and 44 m
wide was collected in a cylindrical tank of radius
14 m.
Find
(a) volume of water that fall on the roof.
(b) rise of water level in the tank due to rain water.​

Answer 1

Answer:

A) l=70; b= 44m and h= 10 cm = 0.1 mSo, volume of water on roof = lbh =70×44×0.1=308m3  (As, the rainwater will forma cuboidal shaped solid on the roof)

(b) Let h be the height of the water in the tank.Volume of the water intank=πr2h=227×142h=616hAs, the water is falling to the tank from the roof,

So 308= 616h

h= 308/616=0.5 m