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Pi was not 'made'. Pi was a quantity which mathematicians discovered. By experimenting, they found that there was a very special RELATIONSHIP between the Diameter of every circle, and it's perimeter, or Circumference. They found that the Circumference is ALWAYS exactly 3.14159 times the size of the Diameter of the circles. They decided hundreds of years ago, to call this special quantity 'Pi' , which is a Greek letter. Much later, the mathematicians used a special type of mathematics, called 'calculus' to find out the very, very, precise value of 'Pi'. For most purposes , it is good enough to use the quantity 3.142 and still get a fairly accurate answer.
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Where was pi made?
pi = circumference/diameter
What did Archimedes do about pi?
Archimedes made pi more precise
When was pi first made?
pi was not made - it is not a human artefact. The ratio of the circumference of a circle to its diameter exists independent of human existence.
When was Pi Day made official?
Pi Day, celebrated on 14 March every year, was made official in 2009. See the related weblink.
Pattern made by notes of different lengths?
Pi
