For a right circular cone of base radius $r$ and semi-vertical angle $\alpha$, the volume can be expressed as which of t

Question

For a right circular cone of base radius $r$ and semi-vertical angle $\alpha$, the volume can be expressed as which of the following?

Accepted Answer

$\dfrac{\pi r^3}{3 	an\alpha}$

Answer

$\pi r^3 	an\alpha$

Answer

$\dfrac{\pi r^2}{\sin\alpha}$

Answer

$\dfrac{4}{3}\pi r^3$

For a right circular cone of base radius rrr and semi-vertical angle α\alphaα, the volume can be expressed as which of the following?