### Happy pi day

###### Sat 14 March 2015

On this Pi day , I would like to enumerate all uses of pi I know. There are more ( listed here ):

- The well known mathematical constant , defined as the ratio of a cicle’s cicumference to its diameter and whose decimal are usually computed through infinite series .
- The small computer raspberry pi
- The sign to indicate a product
- The greek letter
- Food

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