You have a head full of irrelevancies.
They computed Pi to some degree of precision. They didn’t, until later realize that there was no ratio of integers that would exactly equal pi.
The discovery of irrational number is the discovery that integer ratios are not sufficient.
Calculating pi to some degree of precision, or even recognizing that a given degree of precision is ‘good enough’ is different from the realization that no degree of precision or calculation means can ever be exact.
You demonstrate that you have no grip on our number system, nor on the history of numeric computation.
Pi has been known since before the recorded history of mathematics. The use of the ratio 22/7 was for simplification of construction layout, and nothing more. The circumference of Solomon’s laver given in the early scrolls was 31 cubits and 5 ‘inches’ or 12ths. This value gave a value of Pi very close to the same 22/7 number that has been in use for construction purposes for about 4500 years.
The KJV Bible never defined Pi.