. "Nobody can calculate the exact value of \u03C0 because it is an irrational number; it couldn't be written down other than as a forumula. The first calculations of inexact values of \u03C0 are more than 2000 years old; 3 is fairly close, after all."@en . . "Nobody can calculate the exact value of \u03C0 because it is an irrational number; it couldn't be written down other than as a forumula. The first calculations of inexact values of \u03C0 are more than 2000 years old; 3 is fairly close, after all."@en . . "Who were the first people to calculate the value of pi"@en .