Pi Day is an annual celebration of the mathematical constant \u03c0. It is observed on March 14 (the 3rd month) since 3, 1, and 4 are the first three significant figures of pi, and was first celebrated in the United States in 1988.<\/p>\n
Pi is a special number that describes how many times the diameter of a circle fits into its circumference \u2013 about 3.14 times.<\/p>\n
I need pi quite often, e.g. to calculate necklines.
\nAnd now also for striped socks.<\/p>\n","protected":false},"excerpt":{"rendered":"
PDF knitting pattern to work your own “Pi 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