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Difficulty: MediumPuzzle Details

Which square, which circle, and which triangle has the closest area to the doughnut shape on the left?

The drawings are to scale, so you might be able to judge it, as well as working the actual areas out.

Puzzle Image

Show Hint Show Answer Print Puzzle
[Ref: ZKRC] © Kevin Stone 

Hint: The area of a circle is π x Radius2.


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[Added September 1997]

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