えんしゅうりつ
円周率
1. pi (3.1415926...)Mathematics, π
2. PiThe number π is a mathematical constant that is the ratio of a circle's circumference to its diameter. The constant, sometimes written pi, is approximately equal to 3.14159. It has been represented by the Greek letter "π" since the mid-18th century.
Read “Pi” on English Wikipedia
Read “円周率” on Japanese Wikipedia
Read “Pi” on DBpedia
Read “Pi” on English Wikipedia
Read “円周率” on Japanese Wikipedia
Read “Pi” on DBpedia
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