




 Some facts about PI:
 Pi is a greek letter
 Pi is a constant number for all circles of any size, Pi will be the same
 Pi is an irrational number
 Pi is infinite
 Pi never repeats
 Pi is approximately 3.1415926535897932384626433832795......
 Pi is the ratio of a circle's circumference to it's diameter.
 Pi is often used in solving geometry problems, for example:
The area of a circle:
A = πr2
The volume of a cylinder:
V = πr2h
 Pi is essential to engineering, architecture, and construction.
 Pi is used by NASA scientists and engineers to explore other planets.
 Pi day is physicist Albert Einstein's birthday.
Check out this infographic to see how NASA uses Pi. Learn more about Pi and geometry here. 



  Watch the video below for some more interesting facts about Pi. Also, take the survey to receive credit. 
   
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