and you can see that the ribbon is just over 3 times the diameter of 1 circle. This number, called Ï€ (or pi), is approximately 3.14. You have shown that the circumference of a circle is Ï€ × ...
The Associated Press on MSN11d
What's Pi Day all about? Math, science, pies and morePi can calculate the circumference of a circle by measuring the diameter — the distance straight across the circle’s middle — ...
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