Directory For a Sex Photos : 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
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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
![matthen: Unrolling these circles gives fills a triangle with base 2 π r and height](https://64.media.tumblr.com/8bc239eb9e2687bc8a8e2de06b11f73b/tumblr_nci8cxnrFO1qfg7o3o1_1280.gif)
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