Question

Find the volume of a right circular cone with radius $$3.5$$cm, height $$12$$ cm.

Answer 1

Correct option is A. $$154$$ $$cm^3$$.
Here,

$$r=3.5\,cm$$ and $$h=12\,cm$$

Volume of right circular cone $$=\dfrac{1}{3}\pi r^2 h$$

$$=\dfrac{1}{3}\times \dfrac{22}{7}\times (3.5)^2\times 12$$

$$=154\,cm^3$$