Write True or False
If two solid hemispheres of same type whose base radii are r unit each and if they are connected along base. Then the total surface area of the connected solid is `6pir^2` sq.unit.

Write whether the following statements are true or false : (i) If two solid hemisphere of same type of which the radii of bases are r unit be joined along their bases , then the total surface area of the joint solid object is 6pir^(2) square - unit .

If the radius of the base of a cylinder be r units and the height of the cylinder be h units, then the total surface area of the cylinder is

If the radius of a solid sphere is r unit, the total surface area of the quarter sphere is

Write whether the following statements are true or false : (ii) The radius of base , height and slant height of a solid right circular cone are r unit h unit and l unit respectively . The base of the cone is joint along the base of solid right circular cylinder. If the radii of the bases and heights of the cylinder and of the cone be equal , then the total surface area of the joint solid object will be (pirl + 2pirh +2 pir^(2)) sq - unit

Write True or False: The curved surface area of a solid hemisphere with radius r cm is 2pir^2 sq.cm.

The radii of bases of a solid right circular cylinder and of two hemispheres are equal . If the two hemisphere be joined with two end - planes of the cylinder , then the total surface area of the new solid object = ( the curved surface area of the one of the hemispheres ) + (curved surface area of the .......... ) + ( the curved surface area of the other hemisphere).

A right circular cone of radius x cm and of height h cm is placed on a hemisphere . Then the total surface area of the newly constructed solid object will be pi r (sqrt(h^(2) + r^(2))+ 2r) sq- cm

Write True or False : If the volume and the base area of solid right circular cone are V cu.unit and A sq.unit respectively the its height is (3V)/A unit.

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

A solid is in the form of a right circular with a hemisphere at one end and a cone at the other end. The radius of the common base is 8 cm and the heights of the cylindrical and conical portions are 10 cm and 6 cm respectivly. Find the total surface area of the solid [use pi=3.14 ]