# Q : 6     The capacity of a closed cylindrical vessel of height 1 m is litres. How many square metres of metal sheet would be needed to make it?

(Using capacity(volume), we will find the radius and then find the surface area)

The capacity of the vessel = Volume of the vessel = litres

Height of the cylindrical vessel =

Let the radius of the circular base be

The volume of the cylindrical vessel =

Therefore, the total surface area of the vessel =

Therefore, square metres of metal sheet needed to make it is

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