14 March 2010
Pi Day
Pi day is an informal day celebrating the mathematical value of pi. It is celebrated typically on March the 14th. or 3.14 ( this is the typical US date format) . It is also celebrated on 22nd of July being 22/ 7 being an approximation of pi. There are a number of other days that are also considered such as the 314th day of the year.
The 14th of March also is Albert Einstein's birthday making a great celebration day for science centres around the world.
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Pi day can be celebrated in many ways, but most typically with eating pies and plenty of circular objects.
C=2πr
C= circumference
r= radius
π = 3.1415....