π=3. 14 15926535? 8979323846? 2643383279? 502884 197 1? 69399375 10 ? 5820974944? 5923078 164? 0628620899? 8628034825? 342 1 170679? 82 1480865 1? 3282306647? 0938446095? 5058223 172? 5359408 128? 48 1 1 174502? 84 10270 193 ...........
Pi?
That is, pi is the ratio of the circumference to the diameter of a circle, which is generally expressed by the Greek letter π, and is a universal mathematical constant in mathematics and physics.
Calculation formula: