Find the volume of a cone whose radius is 2 cm and height is 7cm

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Find the volume of a cone whose radius is 2 cm and height is 7cm

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$29 c m^{3}$

$28 c m^{3}$

$29.3 c m^{3}$

$30 c m^{3}$

answer is C.

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Detailed Solution

Concept: Volume of right circular cone is given by:

$\Rightarrow V = \frac{1}{3} π r^{2} h$

Given: r = 2 cm and h = 7 cm

Therefore,

$\Rightarrow V = \frac{1}{3} π {(2)}^{2} . 7$

$\Rightarrow \frac{1}{3} \times \frac{22}{7} . 4.7 = \frac{88}{3}$

$\Rightarrow 29.3$

Hence, the volume of cone is $29.3 c m^{3}$ .

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