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- Jun 26th 2007, 07:39 AM #1

- Joined
- Nov 2006
- Posts
- 152

## 3/8

help me can you prove r/l =sqrt 2

L is the length of the rectangle equivalent of the diameter of the Extraordinary

http://www.mathyards.com/attach/upload2/wh_87858887.PNG

- Jun 26th 2007, 07:57 AM #2

- Jun 27th 2007, 02:45 AM #3

- Joined
- Nov 2006
- Posts
- 152

can you help me to prove Sangaku

and 2 Sangaku in these

http://www.mathyards.com/attach/upload2/wh_68869629.PNG

r(yello)/r(blue)=8/3