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  1. #1

    Happy Pi Day

    3/14 is Pi day ... now who remembers what we use Pi for?

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  2. Happy Pi Day
  3. #2
    Registered User Enthusiast
    Posts
    51
    Pi is the ratio of the circumference of a circle to its diameter. Or, the circumference of a circle will equal the length of its diameter multiplied by Pi.

    So do I win a prize?

  4. #3
    Registered User Senior Member
    Posts
    112
    Funny. I always learned the formula as "pi r-squared" ...

  5. #4
    Registered User Junior Member
    Posts
    31
    Yes happy Pi day. And beware the Ides of March.

  6. #5
    Two winners: Michelle_S and garyol are both right.

    Learn more about Pi, Pi Day, and even Pi Approximation Day (7/22 -- the inverse of 22/7) on Wikipedia.
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