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Minimizing area

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A piece of wire 35cm long is to be cut into two pieces,one piece will be bent into a equilateral triangle and the other a circle.How should the wire be cut so that the enclosed area is minimized?

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This shows how to minimize area.

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Suppose the wire is divided into two part. One part is x cm and the other part is 35-x cm. The part with x cm is bent into an equilateral triangle, so each side ...

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