It is multiplied times
It is the result of the BPP formula and Machin-like formulas. Divided by four, it is equal to the Gregory series. When dividing it by two, it is the answer to Buffon's needle problem. It is multiplied times i in Euler's (OY-lurz) identity. Lindermann proved that it is (*) transcendental, implying that the circle cannot be squared. It is equal to 180 degrees divided by one radian. For 10 points, name this number, equal to the ratio of a circle's circumference and its diameter, and symbolized by a Greek letter.
It is the result of the BPP formula and Machin-like formulas.
pi