Definition:Pi/Decimal Expansion

Decimal Expansion
The decimal expansion of $\pi$ starts:
 * $\pi \approx 3 \cdotp 14159 \, 26535 \, 89793 \, 23846 \, 26433 \, 83279 \, 50288 \, 41971 \ldots$

Also see

 * Definition:Ludolphine Number