Here are some fun facts about Pi (3.14) that you may not have 
known:
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Pi (Π) is the 16th letter of the Greek alphabet.
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Pi is the ratio of the circumference of a circle to its diameter (Π = c/d)
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Π became the commonly used symbol for Pi around 1706 thanks to Mr. William Jones.
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Π has no exact value.
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Chao Lu (of China) holds the Guinness World Record for memorizing & reciting the digits of Π up to 67,890 places (as of November 20 2005).
