the capacity of a closed cylindrical vessel of height 1 m is 15.4 liters. How many square meters of metal sheet would be needed to make it?

7.7 square metres or 7.669 square metres of metal sheet

Step-by-step explanation:

Volume of cylinder = 2*22/7*r*100cm

15.4 litres = 15,400 cm cube

Radius = 15 400*7/22 * 50

= 98cm

Surface area of cylinder = (2*22/7*49^2) + (2*22/7*49 * 100)

= 15 092 + 61 600

= 76 692 square cm

= 7.669 square metres of metal sheet required