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matthen: Unrolling these circles gives fills a triangle with base 2 π r and height r (where r is the radius of the filled disk). Such a triangle has area π r2. This does not serve as a complete proof for why this is the area of a circle, but can

published on: 2014-10-02 22:26:25

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milz.tumblr.com/post/98776965919/

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2soft: kateoplis: Ryugyong 2

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yinqors: well!!! what happens next !!!!

yinqors: well!!! what happens next !!!!

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