Even if you’re not a mathematician, I think it’s safe to say that most people know the symbol 
.
But do you remember what it actually represents? Here’s a quick math lesson: It’s the ratio of a circle’s circumference (the distance around the circle) to its diameter (edge to edge, measuring through the center). Today is March 14th (3.14), but most math nerds like to celebrate it as #PiDay!
Did you also know..
- is constant for any circle, any size
- Continues to infinity
- In 1706 William Shaw, a Welsh mathematician, introduced the symbol.
- In 2010 a Japanese engineer and an American computer scientist broke the record for most digits calculated past the decimal: 5 trillion!
- If you need to calculate the diameter of a tree trunk, pipe, or anything cylindrical, you will need a diameter tape measure. Just use it to measure the circumference, and it will calculate the diameter for you!
