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Puzzle # 125  Italiano italiano Français francais
Difficulty level: bulbbulb, general math knowledge.
helm of MarsA mathematical shield
  
Once upon a time, Mars, the God of war, intended to test the IQ of the goddess Minerva. So, showing his shield, he told her: "Darling, on my shield, there are 3 equal circles which represent the qualities of the warrior: strength, flexibility, and decisiveness. As you can see, one of the circles has been scratched by a sword, and the resulting score is three inches long (line AB in the illustration). Can you then tell me what is the area of my shield?".

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Keywords: inscribed circles, incircles.

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