A solid hemisphere of radius 24 cm is melted, and identical cones, each of base radius 8 cm and height 6 cm, are formed. How many such cones are forme...

The surface area of a closed rectangular box, which is inscribed in a sphere, is 846 sq cm , and the...

The volume of a cylinder with a base radius of 3 cm is 396 cm³. Find its curved surface area (in cm...

If the radius of a sphere is increased by 50%, then its surface area will increase by: ...

An ice cream is in the form of a cone surmounted by a hemisphere. If the base radius of the cone is ...

The ratio of the base radii of a cylinder and a cone is 3:4, and their heights are in the ratio 2:3...

The volumes of two cubes are in the ratio 8:27. The ratio of their surface areas is:...