0Story of Pi
In math, "pi" (often written as the Greek letter π) is a number that represents the ratio of a circle's circumference (the distance around the circle) to its diameter (the distance across the circle through its center). No matter how big or small the circle is, this ratio is always the same and approximately equal to 3.14159.
To put it simply, if you take a string and wrap it once around a circle, then lay that string out straight, it would be a little more than three times the length of the circle's diameter. This "little more" is the extra decimal places of pi. Pi is an irrational number, meaning it goes on forever without repeating.
Now, what is irrational number? Will post in second lesson.
In mean while try the above and let me know.
