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Pi Magnets, Buttons

March 14th is Pi Day (3.14) The number π is a mathematical constant, the ratio of a circle's circumference to its diameter, commonly approximated as 3.14159. It has been represented by the Greek letter "π" since the mid-18th century, though it is also sometimes spelled out as "pi"
Pi_314
Pi_314
Atualizado pela última vez 20 de jul
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