Packing Circles around Circle, Why Doesn't This Formula Work?
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 From:  Max Smirnov (SMIRNOV) 9 Jun 2015  (3 of 6) 
7441.3 In reply to 7441.1 
20×sin(180/10)/(1-sin(180/10)) = 8,944271909999
Everything is correct.
Are you using radians or degrees?

moi.maxsm.net
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 From:  BurrMan 9 Jun 2015  (4 of 6) 
7441.4 In reply to 7441.1 
Yup, the Asterisk:
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 From:  bemfarmer 9 Jun 2015  (5 of 6) 
7441.5 
It is easy to use a 10 sided polygon to construct the 10 outer circles, at an arbitrary radius.
Place the inner circle, then scale its radius, to the proper radius, along with everything.
- Brian
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 From:  OSTexo 9 Jun 2015  (6 of 6) 
7441.6 
Hello All,

Thanks for the assistance, I appreciate it, this is very helpful.

Circles

EDITED: 3 Feb by OSTEXO
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