Jacob Galasso in 1744
The ancient Egyptian worked out the value of pi as being 3.16
That's just the way it worked out. Pi is the ratio of the circumference of a circle to its diameter, and it just worked out that this ratio is an irrational number.
James Gregory
Euclid discovered pi
Lots of scientists have worked on evaluating pi. The question needs to be a little ,ore specific.
The first digit of pi is 3, the first decimal is 1. Pi ≈ 3.14 The first fifty digits are 3.1415926535897932384626433832795028841971693993751
The value of pi is determined by dividing a circle's circumference by its diameter and an exact value has never been worked out because pi is an irrational number.
Pi was first used by the Babylonians and Egyptians.
The first time the symbol Pi was first used for Pi was in ancient Greece in their numbers. The symbol "π" was number 80 in Greece.
The circumference of a circle is worked out by multiplying the diameter of the circle by pi.
The first numbers of pi is 3.14159265358979323846264338327950288419716939937510 58209749445923078164062862089986280348253421170679
3.14159265358979323846 are the first 20 digits of pi.