In this module, you can study how to calculate the distance around a circle (its circumference) if you know its diameter.
Pi is the name for a very long number: 3.1415926535897932384626433832795028841971...
The symbol for pi is: π
A scientific calculator has a button 'π' to press if you need to use pi.
Formula for calculating a circle's circumference: 2πr
This means: 2 x 3.14...(π) x radius length
Study and practice
