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Wull I think It has become smaller with the years. I remember it to eight places as 3.14159267 circa 1971. The latest value rounded to eight places is less....3.14159265.
I had a draughting apprentice prepare a production drawing for a hobbing cutter once and he used 22/7 for Pi!! sSo much for year 11 maths, maybe he should have stayed at school and finished year 12?
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