The capacity of a closed cylindrical vessel of height 1 m is 15.4 litr – InterviewSolution

1.	The capacity of a closed cylindrical vessel of height 1 m is 15.4 litres. How manysquare metres of metal sheet would be needed to make it?
Answer» inner radius of tank(r)=1mthickness =1cm=0.001m (convert into m )External radius of tank(R)=(1+0.001)=0.01m= 2/3π(cube of big R-cube of small r)= 2/3×22/7×(1.01)3-(1)3=2/3×22/7×0.030301 m3=0.06348m3.

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