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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

m^{3}

b

1100

m^{3}

c

275

m^{3}

d

550

m^{3}

answer is D.

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Detailed Solution

Radius of the well

(r) = \frac{5}{2} m

Deep of the well $(h) = 14 m$

Volume $(V) = π r^{2} h = \frac{22}{7} \times \frac{5}{2} \times \frac{5}{2} \times 14 = 275 m^{3}$

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