If a hemisphere of radius r unit is placed on one  end of a right circular
Channel: Doubtnut
Date: 2020-05-09

If a hemisphere of radius r unit is placed on one  end of a right circular cyllinder of radius r unit and height h unit and a right circular cone of radius r unit and  height  h unit on the other end of the cylinder , then the total surface area of the new solid object will be ` pir (2h+2r+sqrt(h^(2)+r^(2)))` sq - unit