A right triangle with sides 9 cm, 12 cm and 15 cm is rotated about the side of 9 cm to form a cone. The volume of the cone so formed is:

Answer: Option A

Solution

Answer: Option A

Solution:

Volume ⇒ $$\frac{1}{3}$$πr²h
⇒ $$\frac{1}{3}$$π × 12 × 12 × 9
⇒ 144 × 3π
⇒ 432π