National Pi Day Merch by Tric-Art

Cute Happy Pi Day or Pie Day March 14th T-shirt

Pi Day is on March 14th to celebrate the famous calculation of the circumference of a circle. Since a pie is usually a circle and has the same pronunciation as Pi, it's just fitting to celebrate them both on 3.14 or March 14. It's fun to challenge your friends on how many digits they can memorize.

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