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CBSE Class 9 Answered

Ramu is a gardener who pulls water from an undeground tank of diameter 7 m to irrigate his garden.If he pulls up
200 buckets of total water,then water level falls down 10cm in the tank.What is the capacity of the bucket in litre?
Asked by araima2001 | 17 Nov, 2014, 06:27: PM
answered-by-expert Expert Answer
D i a m e t e r space o f space t h e space tan k equals 7 space m equals 700 space c m R a d i u s space o f space t h e space tan k equals fraction numerator 700 space c m over denominator 2 end fraction equals 350 space c m H e i g h t space o f space t h e space w a t e r space l e v e l space f a l l s space d o w n equals 10 space c m V o l u m e space o f space t h e space tan k space f a l l s space d o w n equals 22 over 7 cross times 350 cross times 350 cross times 10 G i v e n space t h a t space v o l u m e space o f space t h e space w a t e r space f a l l s space d o w n equals 200 space b u c k e t s space o f space w a t e r rightwards double arrow 22 over 7 cross times 350 cross times 350 cross times 10 equals 200 cross times V o l u m e space o f space t h e space b u c k e t rightwards double arrow 22 over 7 cross times 350 cross times 350 cross times 10 cross times 1 over 200 equals V o l u m e space o f space t h e space b u c k e t rightwards double arrow v o l u m e space o f space t h e space b u c k e t equals 19250 space c m cubed 1000 space c u b i c space c m equals 1 space l i t r e 19250 space c u b i c space c m equals 19250 over 1000 therefore C a p a c i t y space o f space t h e space b u c k e t space i n space l i t r e equals 19250 over 1000 equals 1.925 space l i t r e space
Answered by Vimala Ramamurthy | 18 Nov, 2014, 10:13: AM

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