Because, you know this question will come up! I’d like to have these graphics to explain when it does!
Screenshot via I Like Pi
What Is Pi (π)?
π = c/d
Pi (3.14) is the distance around a circle, or circumference, divided by its diameter. Pi is always the same number no matter the size of the circle.
Why isn’t Pi rational?
Pi is an irrational number, which means that it is a real number with decimal that repeats forever. There is no exact value for the number since it repeats infinitely.
If you would like to investigate π on your own, try this brief experiment from Scientific American.
- Using a compass, draw a circle.
- Take one piece of string and place it on top of the circle, exactly once around.
- Straighten out the string; its length is called the circumference of the circle.
- Measure the circumference with a ruler.
- Measure the diameter of the circle, which is the length from any point on the circle straight…
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