Letter: National pi day?

Published 16 March 2011

From Nick Ash

Some people have just marked 14 March as “pi day”, since the date is written 3.14 in the US. British readers who missed it might like to celebrate on approximately 22 July – 22/7 in UK notation.

Grange-over-Sands, Cumbria, UK

Issue no. 2804 published 19 March 2011

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