Total surface area `= 2 pi R h + 2 pi r h + 2 pi(R ^2-r^2)`.

Total surface area quad =2 pi Rh+2 pi rh+2 pi(R^(2)-r^(2))

Total surface area =(2 pi rh+2 pi r^(2)) sq.

Curved (lateral) surface area = (External surface areal) (Internal surface area)= 2 pi Rh+2 pi rh=2 pi h(R+r)sq. units.

State True or False: A solid cylinder of radius r and height h is placed over other cylinder of same height and radius. The total surface area of the shape so formed is 4pi h + 4pi r^2

A cylinder with radius r and height h is closed on the top and bottom.Which of the following expressions represents the total surface area of this cylinder? 2 pi r(r+h) (b) pi r(r+2h)pi r(2r+h)(d)2 pi r^(2)+h

A cylinder with radius r\ and height h is closed on the top and bottom. Which of the following expressions represents the total surface area of this cylinder? (a) 2pir\ (r+h) (b) pir\ (r+2h) (c) pir\ (2r+h) (d) 2pir^2+h

State True or False and justify your answer A solid cone of radius r and height h is placed over a solid cylinder having same base radius and height as that of a cone,. The total surface area of the combined solid is pi [sqrt(r^(2) + h^(2)) +3r +2h]

Asolid cone of radius r and height h is placed over a solid cylinder having same base radius and height as that of a cone,. The total surface area of the combined solid is pi [sqrt(r^(2) + h^(2)) +3r +2h]

If the radius of a cone be r units, its height h unit and lateral surface areas S sq unit, then prove that h= sqrt(S^2-pi^2r^4)/(pir) .