π! Mmmm... I love π!!

Interesting Pi Facts

• You can determine your hat size by measuring the circumference of your head, then divide by Pi Pi or 3.1415, and round off to the nearest one-eighth inch.
• The height of an elephant (from foot to shoulder) = 2 x Pi x the diameter of its foot.
• It is more accurate to say that a circle has an infinite number of corners than it is to say it has no corners.
• One of the more accurate fractions for pi is 104348/33215. It is accurate to 0.00000001056%.
• The Babylonians, in 2000 B.C.E., were the first people known to find a value for Pi.
• The Bible uses the value of 3 for Pi. This verse comes from 1 Kings 7:23: "And he made a molten sea, ten cubits from brim to brim: it was round all about, and its height was five cubits: and a line of thirty cubits did compass about it."
• If you were to type one billion decimals of Pi, they would stretch from New York City to the middle of Kansas.
• People once thought that trying to square the circle was an illness called Morbus Cyclometricus.
• To calculate the circumference of the known universe, you would only have to use 39 decimals of Pi and be off by one proton.
• Half of the circumference of a circle with a diameter of 2 is Pi. The area inside the circle is also Pi Pi or 3.1415.
• The most accurate version of Pi was by Dr. Kanada of the University of Tokyo calculated the value of Pi to 206,158,430,000 places in September 1999, surpassing the previous record by more than 150 billion digits.
• The most inaccurate version of Pi In 1897, the General Assembly of Indiana enacted Bill No. 246, stating that Pi was just plain 4.
• Memorizing Pi On February 18, 1995, Hiroyuki Goto of Tokyo, Japan recited Pi Pi or 3.1415 to 42,195 places at the NHK Broadcasting Center, Tokyo.
• Pi and Atmospheric Pressure ... Jonathan Bradshaw points out that standard atmospheric pressure is defined to be P= 0.101325 MPa (this is a human-defined value, which is approximately the average pressure at sea level.) Curiously, if you take the square root of this number and then divide 1 by the result (the reciprocal of the value), you get 3.14153.