Question

The capacity of a closed cylindrical vessel of height lm is 15.4L. How many sq.m of metal
sheet would be needed to make it?
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Answer 1

Answer:

capacity =volume

formula of volume pir2h

h 1 m

r ?

volume 22÷7×r×h=154÷10

154×7/22÷10÷1

0.49 =radius2

r2=0.07

as it is a closed cylinder

so total surface area is required

TSA=2pi r (r+h)

2×22÷7×0.07(0.07+1)

Ans 0.4708msq