Pi Day 314 Scheffels Math Site Home（π天314 Scheffel数学网站）.pptVIP

Fun With Circles Colossus is an 18-story Ferris Wheel. This giant wheel puts guests heads in the clouds, as well as giving a breathtaking view of the entire park. At night, Colossus puts on a show of its own with more than 2,000 lights.  It is 165 feet in diameter and has a circumference of 518 feet. 518ft / 165ft ≈ 3.139, which is almost pi. What is pi? Mathematician: Pi is the ratio of the circumference of a circle to its diameter. Engineer: Pi is about 22/7. Physicist: Pi is 3.14159 plus or minus 0.000005 Computer Programmer: Pi is 3.141592653589 in double precision. Nutritionist: You one track math-minded fellows, Pie is a healthy and delicious dessert! Pi Jokes Q: What do you get if you divide the circumference of a jack-o-lantern by its diameter? A: Pumpkin Pi. Q: What do you get when you take a native Alaskan and divide its circumference by its diameter? A: Eskimo pi. Pi Jokes Q: What do you get when you take the sun and divide its circumference by its diameter? A: Pi in the sky. Q: What do you get if you divide the circumference of a bowl of ice cream by its diameter? A: Pi ala mode. Sources http://www.pen.k12.va.us/Div/Winchester/jhhs/math/humor/pijokes.html http://www.fourmilab.ch/gravitation/orbits/ /~crorres/Archimedes/contents.html /records.php /pifacts.html /tables/constants/pi.htm /library/drmath/view/57543.html Pi Day 3-14 π = 3.14159265358979323846264... March 14th is The Definition of Pi Pi, not Pie. 1.The 16th letter of the Greek alphabet is P or p, corresponding to the roman p.  2. A number, represented by said letter, expressing the ratio of the circumference of a perfect circle to its diameter. The value of pi has been calculated to many millions of decimal places, to no readily apparent pattern. Beginning of Pi It occurs in a list of specifications for the great temple of Solomon, built around 950 BC and its interest here is that it gives π = 3. Not a very accurate value of course and not even very accur