Happy Pi Day

Do you know today is Pi Day? On March 12, 2009, the U.S. House of Representatives passed a non-binding resolution (HRES 224) and in doing so, March 14 is recognised as National Pi Day. Some ways of celebrating this special day are eating a pie, playing pi games, discussing the significance of the number π and guess what -  now it includes watching the Award-winning film Life of Pi!

How about a pi joke to top it all?

A mathematician, a physicist, and an engineer are all given identical

rubber balls and told to find the volume. They are given anything they
want to measure it, and have all the time they need.

The mathematician pulls out a measuring tape and records the circumference. He then
divides by two times pi to get the radius, cubes that, multiplies by pi
again, and then multiplies by four-thirds and thereby calculates the
volume.

The physicist gets a bucket of water, places 1.00000 gallons of
water in the bucket, drops in the ball, and measures the displacement
to six significant figures.

And the engineer? He writes down the serial
number of the ball, and looks it up.