A hemisphere is a _____________________ solid which is exactly half of a _______________

Find the total surface area of a cone, if its slant height is 21 m and the diameter of its base is 24 m.

Find the total surface area of a right circular cone with radius 6 cm and slant height 8 cm.

The inner and outer radii of the spherical shell are 3 cm and 7 cm respectively. Find the outer curved surface area of the spherical shell.

Find the lateral surface area of the hollow cylinder if inner and outer radii are 3 cm, 4 cm respectively and height is 14 cm.

The length, breadth and height of a cuboidal tank are 1.2 m, 1.5 m and 1 m respectively. The lateral surface area of the tank is equal to _______________

Find the lateral surface area of the hollow cylinder if inner and outer radii are 4 cm, 7 cm respectively and height is 7.7 cm.

Find the surface area of the cube having edge as 12.5 cm.

The surface area of a chalk box whose length  breadth and height are 10 cm, 6 cm and 3 cm  respectively is __________________.

A corn cob, shaped somewhat like a cone, has the radius of its broadest end as 2.1 cm and length as 20 cm. If each 1 of the surface of the bob carries an average of four grains, find how many grains you would find on the entire cob?