Multiple choice

If the height and radius of a right circular cylinder become thrice, then the volume of the cylinder will become

  1. 18 times

  2. 15 times

  3. 30 times

  4. 27 times

  5. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Original volume of the cylinder = πr2h

New radius = 3r and new height = 3h

So, new volume = π(3r)2(3h) = 27πr2h

So, the volume will become 27 times of the original volume.