It takes a lot of concentration and free time to calculate the billionth digit of pi. The billionth digit of pi is nine.
Chat with our AI personalities
It's pi not pie not enough room here for a billion places
The billionth digit of pi is 9. http://www.geocities.com/ultrastupidneal/Knowledge-Mathematic-Fact.html
Archimedes
3
It's the floor of pi*1000000000.