Area of a Disk

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The area of a disk with radius is .

Contributed by: Soledad Mª Sáez Martínez and Félix Martínez de la Rosa (March 2011)
Open content licensed under CC BY-NC-SA


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Reference: R. J. Hendel, "Proof without Words: Area of a Disk Is ," Mathematics Magazine, 63(3), 1990 p. 188.



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