Posted on 03/14/2019 2:04:52 PM PDT by Reno89519
Yes, today is Pi Day! What is your favorite Pi math question?
One would suspect it was the use of a wheel to measure distance.
If Pi is infinite, may I have another?
My brother and I used to challenge each other memorizing pi. I could only get up to 4626.
It got useful in later years when I had to come up with new passwords every 3 months on the work computers.
I wouldn’t mind coming up with new passwords
if I could remember them five minutes later.
Because Pi claims to measure a “circle”, a thing that does not actually exist. What exists is a series of connected triangles.
that’s a good one! It’s pretty obvious once you figure it out. I approached it from the way of, what extra length would I need to raise the string 1 m off the ground.
back in the 80s I paid $200 (real money back then) for a 41CV (or was it a CX?) for solving simultaneous equations in circuits class. Is the Inspire RPN also?
Because they measured the space for the pyramids with a wheel on a stick, and a mark to count the revolutions.
Divisibility for 3,9 and 6.
The sum of the digits works for 3 and 9 and if even 6.
And do not even look at the rule of 72.
Not on Pi day.
“Because Pi is an irrational number. “
You obviously think binary! Pi is NOT irrational. Just misunderstood.
I don’t think it is but I can’t figure it out. Back in the 60s I was pretty good at math. Always scored in the 99th percentile on math. Also in college. Now I can’t even figure out how to use a complex calculator. Will probably just give it to my Grandson tho he is not that good at math.
Back in 1973 I bought a calculator for I think $67. It was made by Rockwell but was branded Sears. I came across it a year or so ago and guess what? It still works. It has a beautiful light green display which is easy on the eyes.
Around 1990 a store cleared out a bunch of HP calculators for $10 each. I bought every one of them just to play with. They all use RPN and for some reason they began to be highly desired around 2000. I sold them all on ebay for between $60 and $100 each. I recall one was purchased by a Scottish Engineering student.
Seen on a t-shirt:
Pi: Irrational but well rounded.
“What is it used for in today’s world”
It’s how you figure the circumference or area of a circle given its diameter.
Pi r O
Causing seizures?
If you raised it 1M, the ends of the string would be 2M apart. The formula is pi times the diameter. The diameter is twice the radius.
I learned back when we didn’t use meters. If the world was a perfect circle and you rapped a string around it and cut it where the ends meet. If you raised it 6” all the way around, how far apart would the ends be. The ends would be 3.14’ apart. Six inch to the radius is one foot to the diameter. One more times pi BVB
the “really important” one was 3/14 /15 at 9:26:53 am.
You remembered!
As a senior physics II student in high school in 1974, my physics prof came in with the FIRST digital calculator available in any San Antonio high school. Maybe the firsdt in the city as well.
In fall 1976, after two years of using a slide rule for engineering classes, I scraped up 435.00 dollars (in pre-Carter inflationary dollars!) for an HP45 to use as a junior and senior. RPN.
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