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According to Google NGrams, World Wars I and II both primarily used 3.1416 to represent pi. https://books.google.com/ngrams/graph?content=3.1416&year_start=180
by 13of40 11y ago
According to Google NGrams, World Wars I and II both primarily used 3.1416 to represent pi.
https://books.google.com/ngrams/graph?content=3.1416&year_start=1800&year_end=2000&corpus=15&smoothing=3&share=&direct_url=t1%3B%2C3.1416%3B%2Cc0 https://books.google.com/ngrams/graph?content=3.1416&year_st...