How many cubic meters of earth must be dug out to make a well of dimeter 5 m and depth 14 m?

1100 m

^{3}

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137.5 m

^{3}

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550 m

^{3}

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275 m

^{3}

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Solution

The correct option is D 275 m $^{3}$
Volume of earth dug out = Volume of the well
$= π r^{2} h = \frac{22}{7} \times 2.5 m \times 14 m = 275 m^{3}$

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A circular well with a diameter of 2 metres,is dug to a depth of 14 metres. What is the volume of the earth dug out?

(a) $32 m^{3}$

(b) $36 m^{3}$

(d) $44 m^{3}$

20

2

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