It is approximately equal to 3.14159. It has been represented by the Greek letter "π" since the mid-18th century, though it is also sometimes spelled out as "pi ... ... <看更多>

π is defined as the ratio of a circle's circumference C to its diameter D. That is, π=C/D. Equivalently, ... ... <看更多>

How to calculate P.I.. ... Why teachers performance is measured through PI?? 2 yrs Report. Prashant Yadav, profile picture. Prashant Yadav. ... <看更多>

ha. not really the answer they were looking for with calculate being the operative word and all. Math.PI is a constant. ... <看更多>