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Q.

The volume of earth must be dug out to make a well of diameter 5 m and depth 14 m is

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a

137.5 m3

b

1100 m3

c

275 m3

d

550 m3

answer is D.

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Detailed Solution

Radius of the well (r)=52m

Deep of the well (h)=14 m

Volume (V)=πr2h=227×52×52×14=275 m3

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