Pi questions!:

1. What is the number meaning of π?

2. When is the official π day?

3. Is π a rational or irrational number?

1. 3.14 ...

2. March 14

3. irrational

1. Pi is usually expressed in a shorter form, as 3.14. However, it goes on with an infinite number of digits. Here is pi with 12 decimal places:

3.14159265359

2. Pi day is officially on March 14th, because March is the 3rd month of the year and it is the 14th day, representing the first 3, and most famous, digits of pi: 3.14.

3. Pi never ever ends. It is an infinite number of digits and decimal places, and since it's not just one digit repeating or anything, it can't be written in its exact form as a fraction or decimal. Therefore, it's irrational.