March 14 (3.14) is Pi Day. As we all know, Pi (symbol: ) is a mathematical constant which is the ratio of the circumference of any circle to its diameter. That means that if we measure the circumference of a circle and divide it with its diameter, then the quotient is always . The constant is an irrational number; it starts with 3.14 and continues forever.

Pi Day was created 1988 by Larry Shaw, a physicist at the San Francisco Exploratorium.

Happy Pi Day: March 14 (3.14) is Pi Day. As we all know, Pi (symbol: ) is a mathematical constant which is the r… http://t.co/Qy2cWk7f

If we find pi by dividing rational numbers then how has it been decided that it is irrational? thanks

Hi Susan. The circumference of a circle with diameter is which means that it is always irrational.

Everyone, take a look at my new Pi FORMULAS on youtube: http://www.youtube.com/watch?v=2ihPtn_nL2k

Pingback: Pi Day: World’s most famous circles

Pingback: Year 2012 in Review - The Most Shared Posts