The volume of hemisphere with radius 1.2 cm is ……….. cm³.

A bucket is in the form of a frustum of a cone with capacity of 12308.8 cm³ of water. The radii of the top and bottom circular ends are 20 cm and 12 cm respectively. Find the height of bucket and the cost of making it at the rate of Rs. 10 per cm².

The volume of sphere with diameter 1 cm is …….. cm³.

The volume of sphere is in 4/3 π cm³. Then its diameter is ………. cm.

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