A pillar 11 m in radius is 21 m high. How much material was used to construct it? (Use π = 22/7)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 7986 m3
Given:
A pillar 11 m in radius is 21 m high
Formula used:
Volume of cylinder = πr2h ---- (1)
Where, r = radius and h = height
Calculations:
Using equation (1), we get
Required material = (22/7) × 11 × 21
⇒ 22 × 11 × 3 = 7896 m3