Question

 

How to do it with calculus?
Joshi sir comment

length for one turn = 3

Draw diagonal of a rectangle then turn it as a cylinder, you will get the construction given in the question.

In triangle l = 32+n2 So total length of wire having n turn = n32+n2 Compare with 20 and solve

 

Read 1 Solution.

i understood that method...is there a method using calculus?

LUFFY 1 Month ago is this solution helpfull: 0 0

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