Question

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?

Answer 1

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.