"A rocket is   in the form of a circular cylinder closed at the lower end with a cone of the
Channel: Doubtnut
Date: 2020-06-28

"A rocket is
 
  in the form of a circular cylinder closed at the lower end with a cone of the
 
  same radius attached to the top. The cylinder is of radius 2.5 m and height
 
  21 m and the cone has the slant height 8 m. Calculate the total surface area
 
  and the volume of the rocket."