"The   altitude of a circular cylinder is increased six times and the base area is   decreased
Channel: Doubtnut
Date: 2020-07-05

"The
 
  altitude of a circular cylinder is increased six times and the base area is
 
  decreased one-ninth of its value. The factor by which the lateral surface of
 
  the cylinder increases, is
 `2/3`
  (b)
 
  `1/2`
  (c) `3/2`
  (d) 2"