AM 1590 WTVB The Voice of Branch County

March 14, 2015 1:23 PM

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PI is the number you figure out a circle’s circumference from knowing its diameter.

It’s also today’s date, something that only happens once a century. Cindy Lawrence runs the National Museum of Math and says when you do that division, you take the circumference and divide it by the diameter, you always get this exact same number that is called Pi. It seems rather magical and speci...

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