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My son's extra credit presentation for Honors Algebra 2 - Pi Appreciation Day 3.14.12

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- 1. Pi-tastic
- 2. Yumm….
- 3. Did You Know?Albert Einstein (oneof the greatestphysicists of all time)was born on pi day.Bet you didn’t knowthat.
- 4. Pi is super longIf you were to print 1 billion digits of pi it wouldstretch from New York City to Kansas. That’s along piece of paper.
- 5. We use pi more than you thinkPi occurs in hundreds of equations in manysciences including those describing the DNAdouble helix, a rainbow, ripples spreading fromwhere a raindrop fell intowater, superstrings, general relativity, normaldistribution, distribution of primes, geometryproblems, waves, navigation and much more.
- 6. You think memorizing 100 digits is hard?Hiroyuki Goto of Tokyo, Japan holds the worldrecord for most memorized digits of pie with42,195
- 7. “What do you get if you divide the circumference of a jack-o-lantern by its diameter?Pumpkinπ
- 8. Most accurate pi calculation to date Its hard to imagine a trillion of anything (its a million million), but Shigeru Kondo calculated 5 trillion digits of pi in August of 2011... and then blew that away with 10 trillion digits!
- 9. Pi hasn’t been around foreverPi has been studied for 4000 years; however,the actually pi symbol has only been in use for250 years.
- 10. Euler’s relation to piOur “Favorite Friend” Euler was one of thefirst mathematicians to use the symbol for piin 1737.
- 11. Common misconception of circlesMost people would say that a circle has nocorners, but it is more accurate to say that ithas an infinite number of corners.
- 12. Babylonian mathematiciansThe first signs of pi were in Babylon in 2000b.c. They used the fraction 25/8 or 3.125 aspi, we’ve come a long way since then.
- 13. Numbers in PieThe first million decimal places of pi consist of99,959 zeros, 99,758 1s, 100,026 2s, 100,2293s, 100,230 4s, 100,359 5s, 99,548 6s, 99,8007s, 99,985 8s, and 100,106 9s.
- 14. Wasted life??Ludolph van Ceulen (1540-1610) spent most of his lifecalculating the first 36 digits of pi (which were namedthe Ludolphine Number). With today’s moderntechnology it would take someone about 2 minutes tocalculate 36 digits of pi.
- 15. Fun FactPi was first rigorouslycalculated by one of thegreatest mathematicians ofthe ancient world,Archimedes of Syracuse(287-212 B.C.). Archimedeswas so engrossed in his workthat he did not notice thatRoman soldiers had takenthe Greek city of Syracuse.When a Roman soldierapproached him, he yelled inGreek “Do not touch mycircles!” The Roman soldiersimply cut off his head andwent on his business.
- 16. Circumference is never exactWe can never truly measure thecircumference or the area of a circle becausewe can never truly know the value of pi. Pi isan irrational number, meaning its digits go onforever in a seemingly random sequence

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