Question

A right triangle with sides 3cm, 4cm and 5 cm is rotated about the side of 3 cm to
form a cone. The volume of the cone so formed is --------.

Answer 1

QUESTION

A right triangle with sides 3cm, 4cm and 5 cm is rotated about the side of 3 cm to

form a cone. The volume of the cone so formed is.

Answer :

If 3cm side is rotated to form circular cone then ,3cm will be the height of that circular cone .

${ \bold {\sf {\purple{volume \: of \: cone \: = \frac{1}{3} \times \pi \: \times {r}^{2} \times h }}}}$

$\implies \: \: \mathsf{v = \frac{1}{3 } \times \pi \: \times {4}^{2} \times 3 }$

$\mathsf{ \implies \: \: \: answer \: = \: {16\pi \: cm}^{3} }$