The
capacity of a closed cylindrical vessel of height 1 m is 15.4 litres.
How many square metres of metal sheet would be needed to make it?
Let the radius of the circular end be r.
Height (h) of cylindrical vessel = 1 m
Volume of cylindrical vessel = 15.4 litres = 0.0154 m3
⇒ r = 0.07 m
Therefore, 0.4708 m2 of the metal sheet would be required to make the cylindrical vessel.