Pi is one of my favorite things in the world. The idea that the relationship between an arc and a straight line can be infinite in numeric description justifies the amazing connection between the impossible and the possible for me.
With the use of computers, Pi has been calculated to over 1 trillion digits past the decimal point. Pi is an irrational and transcendental number meaning it will continue infinitely without repeating. The symbol for pi was first used in 1706 by William Jones, but was popular after it was adopted by the Swiss mathematician Leonhard Euler in 1737.
So if you are need of measuring the area of a circle - this is all you need:
And if you are need of measuring the volume of a cylinder - here you go:
And don't forget to spring ahead today and change any old fashioned clocks you may still have.