The diameter and the height of the cylinder are 14 cm and 10 cm respectively. Then the total surface area is ……….. cm².

The volume of cone with radius 2 cm and height 6 cm is ……….. cm³.

The diameter of the base of cone is 10 cm and its slant height is 17 cm. Then the curved surface area of the cone is ………. cm².

The ratio of the radii of two cones having equal height is 2 : 3. Then, the ratio of their volumes is ……..

If the radii of a frustum of a cone are 7 cm and 3 cm and the height is 3 cm, then the curved surface area is …………cm².