Happy Pi Day!

3.
1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 628620899 8628034825 3421170679 ...

(if ya need more'n 100 digits, here're the first 10,000 digits of pi.)

Hmmm....must have a slice of pi for lunch...

Pi trivia

According to the Bible pi is exactly 3.

From the New King James, 1 Kings 7:23

And he made the Sea of cast bronze, ten cubits from one brim to the other; it was completely round. Its height was five cubits, and a line of thirty cubits measured its circumference.

pi-related neatness

Suppose you have a string that's about 31.4 meters long (actually 10 pi meters for those who care). Then it can be wrapped tightly around a cylinder with diameter 10 meters. If you add 6.3 meters to the string, you can form the lengthened string into a circle, with the cylinder at the center, and the space between string and cylinder is 1 meter all the way around.

The Earth is about 12,756,000 meters in diameter, or about 40,000,000 meters in circumference. Wrap a string (it'll be approximately 40Mm long) tightly around the Earth. Now make the string 6.3 meters (yes, meters!) longer, as in the previous example. If you form the string into a circle with the earth at its center (like the cylinder before), how much gap do you get between the Earth and the string?

( the answer may surprise you! )