Happy pi day

Sat 14 March 2015

[caption id="" align="alignright" width="75" class="zemanta-img"]English: Pi Pie, created at Delft University o... Pi Pie (Photo credit: Wikipedia)[/caption]

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

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Category: maths Tagged: Pi Day useless, maths