Question

a circular well with a diameter of 2 metres , is dug to depth of 14 metres what is the volume of the earth dug out?
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Answer 1

Given :-

Diameter of a circular well = 2m

Height of a circular well = 14m

Solution :-

Diameter = 2m

Radius = D/2 = 2/2 = 1 m

Height = 14m

The value of π = 22/7 or 3.14

• Volume of cylinder

$= \: \pi {r}^{2}h \:$

Put the required values ,

= 22/7 * 1 * 1 * 14

= 22 * 1 * 2

= 44 cm^3

Hence , The volume of earth dug out is 44 cm^3

Answer 2

Radius=½Diameter

Radius of circular well = 1 m

height/depth of well = 14 m

$\sf \: volume \: of \: cylinder = \pi {r}^{2} h \\ \\ = \frac{22}{7} \times {1}^{2} \times 14 = 44 \: {m}^{3}$

Volume of earth dug out =44 m³