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Please urgent to solve this! 7. A piece of wire 10 m long is cut into two pieces. One piece is bent into a square

Please urgent to solve this!

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7. A piece of wire 10 m long is cut into two pieces. One piece is bent into a square and the other is bent into an equilateral triangle. How should the wire be cut so that the total area enclosed is (a) a maximum? (b) a minimum? Be sure to prove your answer is absolute

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