By Isaaac
PI day recently happened on March 14, and was celebrated in stage IV by having lots of pie and playing games in math class. kids in stage IV brought pie into school. there are 51 billion digits of pi known, but no one has memorized that much. yet. Pi is usually sown using the Greek letter π. pi is important because without it you couldn’t have calculate a circle. pi is 3.14159265368979323846264338327950288419716939937510