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You tie your goat to the fence with a rope of a circular field and she can eat exactly half of field. How long is rope?

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You are a farmer, with a round fenced field of radius 10 meters. You tie your goat to the fence with a rope, and realize that the goat can eat exactly half of the field. How long is the rope?

posted Apr 25, 2016 by Tapesh Kulkarni

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