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The radius of a well is 7m. Water in it ...

The radius of a well is 7m. Water in it is at a depth of 20m and depth of water column is 10m. Work done in pumping out water completely from the well is `(g=10ms^(-2))`

A

38.5 MJ

B

38.5 KJ

C

46.2 MJ

D

385 MJ

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The correct Answer is:
D
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