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Posted in response to A Question For You Math Heavy Hitters from Bob Place on October 04, 2009 at 10:07:07:

Re: A Question For You Math Heavy Hitters

Pi times radius squared. Your 16mm example would be 3.14(Pi) times 64 (8 squared)or 201 square mm.

From Dennis - October 05, 2009 at 10:59:43

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