A right triangle with sides 3 cm, 4 cm and 5 cm is rotated about the sides of 3 cm to form a cone. The volume of the cone so formed is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 16π cm3.
The radius of the cone = 4 cm
The height of the cone = 3 cm
Now,
The volume of the cone = 1/3 × π × r2 × h
⇒ 1/3 × π × 4 × 4 × 3
⇒ 16π cm3