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Discussion of Problem 1020. Rope

why we need to add perimeter of one circle to the result?
Posted by Anupam Ghosh, Wipro Technologies 11 Feb 2012 23:04
Could anyone pls explain?
Re: why we need to add perimeter of one circle to the result?
Posted by Anupam Ghosh, Wipro Technologies 12 Feb 2012 01:12
Got it. we need this because of the rope encircling each nail.
Finally AC.

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