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Unread 10-15-2002, 09:20 AM   #4
bigben2k
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Join Date: May 2002
Location: Texas, U.S.A.
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Here's an easy reminder:

pi R 2 = area

2 R pi = perimeter

The order is simply reversed (2*R*pi <> pi*R^2). The one that's squared is the area formulae, since area is measured in units^2 (square).
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