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) $36 m^{3}$

(c) $40 m^{3}$

(d) $44 m^{3}$

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Solution

Diameter of circular well=2n

$∴$ Radius= $\frac{2}{2} = 1 m$

Depth (h)=14 m

$∴$ Volume of earth dug out= $π r^{2} h$

$= \frac{22}{7} \times 1 \times 1 \times 14 = 44 m^{3}$

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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?
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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 m3 (b) 36 m3 (c) 40 m3 (d) 44 m3

Diameter of circular well=2n ∴ Radius=22=1 m Depth (h)=14 m ∴ Volume of earth dug out=πr2h =227×1×1×14=44 m3

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) $36 m^{3}$

(c) $40 m^{3}$

(d) $44 m^{3}$

Diameter of circular well=2n

$∴$ Radius= $\frac{2}{2} = 1 m$

Depth (h)=14 m

$∴$ Volume of earth dug out= $π r^{2} h$

$= \frac{22}{7} \times 1 \times 1 \times 14 = 44 m^{3}$