Could anyone show me the proof for circle area and circumference. I saw a animated argument that give me the basic theory on circle area but it went to fast to get a firm understanding.

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- Apr 1st 2009, 04:12 PMmanyarrowsderiving the area and circumference of a circle
Could anyone show me the proof for circle area and circumference. I saw a animated argument that give me the basic theory on circle area but it went to fast to get a firm understanding.

- Apr 3rd 2009, 04:07 PMstapel
- Apr 3rd 2009, 06:38 PMmanyarrowsfurther explaination
I have actually found the argument for the area of the circle. The one where you cut it up into tiny pieces and reassemble it as a square and then use the area of the rectangle $\displaystyle r\pi\times r $.

My question now is how do we come up with the circumference of the circle. I'm not looking for a formal proof neccessarily, just a practical explanation. - Apr 3rd 2009, 07:15 PMmr fantastic
Read this: http://www.fiu.edu/~rudomine/pi.pdf