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?
Solution:
Let radius of closed cylindrical vessel
Height of closed cylindrical vessel
m = 100 cm
Capacity of closed cylindrical vessel
litres
1 litre
15.4 litres
Therefore, Volume of closed cylindrical vessel
cm
Total Surface Area of closed cylindrical vessel
=0.4708
Therefore, 0.4708
of sheet is required to make given closed cylindrical vessel.
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