Pi is an irrational number that never ends. Pi is the distance around a circle with a diameter of 1 or half way around a circle with a radius of 1.

Pi is used to find the circumference of a circle, area of a circle, surface area of a cylinder, area of a cylinder, plus much more.

Without pi it would be extremely difficult if not impossible to find the area or circumference of a circle or any of the measurements of figures listed above.

The first person to recognize pi was William Jones. He did this in 1706. He was a mathematics (math) teacher.

Happy pi 1 month late pi day from me!!!!!!!