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CBSE Class 9 Answered

plzzzzzzzzzzzzzzzzzzzzzzzz ......urgent!!! exam tomorrow!!!
Asked by priyanka1995 | 28 Feb, 2010, 10:45: AM
answered-by-expert Expert Answer

In case of multiple questions within a query, please post each question individually and let us know where you are getting stuck so that we would be able to explain things better.

If we have to take N number of bottles, then the total volume of those bottles will be NV, where V is the volume of a bottle. Now this must be equal to the volume of hemispherical bowl or the liquid in it, as they are same.

Volume of liquid in hemispherical bowl = NV

(4πR3/3)/2 = Nπr2h

4R3/3 = 2Nr2h

2R3/3 = Nr2h

N = (2R3/3)/(r2h)

= (2x93)/(3x(3/2)2x4) = 54

Hence 54 such bottles are required to empty the hemispherical bowl.

Regards,

Team,

TopperLearning.

 

Answered by | 28 Feb, 2010, 11:16: AM

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