Happy Pi Day – The Brizzly Guide
Pi Day happens on March 14th every year in the US: March 14 = 3/14, the starting 3 digits of π (3.14…).
via brizzly.com
日本ではいまは円周率=3なんでしたっけ？
Happy Pi Day – The Brizzly Guide
Pi Day happens on March 14th every year in the US: March 14 = 3/14, the starting 3 digits of π (3.14…).
日本ではいまは円周率=3なんでしたっけ？