two
3.14 is good enough for me, the computers figure it more than that
22/7. I was too lazy to memorize 3.14.
3.14159
Thats as far as it goes for me.
That's a little less than .0000269% off
I'm OK with that; it's only about a mile off when calculating the circumference of the earth.
The problem with education in America:
Everyone can recite pi to x digits.
Almost no one can give a geometric proof of A = pi r.
Yo do you want to upgrade your computer? I gots a Voodoo 2 I can sell you. You can run it sli.