The frustum of a right circular cone has the radius of the base as 5 cm, radius of the top as 3 cm, and height as 6 cm. What is its volume?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 98 π cm3
According to the question,
Volume of Frustum = 1/3 π × 6 × [(5)2 + (5 × 3) + (3)2]
⇒ V = π × 2 × [25 + 15 + 9]
⇒ V = π × 2 × [49] = 98π cm3
∴ The volume of frustum is 98π cm3.