Question

Find the volume of a right circular cone whose height is 30cm and base radius is 7cm (π=22/7)

Answer 1

Answer:

4620$cm^{2}$

Step-by-step explanation:

volume of a cylinder=$\pi r^{2} h$

=$\frac{22}{7}$×7×7×30

=4620$cm^{2}$

Answer 2

The volume of a right circular cone is $1540 \ cm^3$ .

Given :

Height of cone , h = 30 cm .

Base radius of cone , r = 7 cm .

It is also given that the value of $\pi$ to use is $\dfrac{22}{7}$ .

We know , volume of a circular cone is given as :

$V=\dfrac{\pi r^2 h}{3}$

Putting value of r and h is above equation we get ,

$V=\dfrac{22\times 7^2 \times30}{7\times3}\\\\V=1540\ cm^3$

Hence , this is the required solution .

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