A cylindrica container is to be made from certain solid material with the following constraints: It has a fixed inner volume of `V m^3`, has a 2 mm thick solid wall and is open at the top. The bottom of the container is a solid circular disc of thickness 2mm and is of radius equal to the outer radius of the container. If the volume the material used to make the container is minimum when the inner radius of the container is `10 mm`. then the value of `V/(250 pi)` is

A cylindrical container is to be made from certain solid material with the following constraints: It has a fixed inner volume of V mm^3 , has a 2 mm thick solid wall and is open at the top. The bottom of the container is a solid circular disc of thickness 2 mm and is of radius equal to the outer radius of the container. If the volume of the material used to make the container is minimum when the inner radius of the container is 10 mm, then the value of V/(250 pi) is

A hollow hemispherical bowl of thickness 1 cm has an inner radius of 6 cm. Find the volume of metal required to make the bowl.

The outer radius of a spherical container is 5cm and the thickness of the container is 2 cm.Find the volume of the metal content of the shell.

A hemispherical tank is made up of an iron sheet 1cm thick.If the inner radius is 1m, then find the volume of the iron used to make the tank

What is the volume of the material in a spherical shell with inner radius ‘r' and outer radius 'R' ?

The material which is commonly used for making kitchen containers is

A metallic sphere 1 dm in diameter is beaten into a circular sheet of uniform thickness equal to 1 mm. Find the radius of the sheet.