For now, we'll only be using the sqrt() function from the math module. Make sure you've imported the math module first! To call it you use dot notation placing the name of the module first: math.sqrt()
math.sqrt(9) returns 3.0
There are many other functions available. For a full list, visit the official Python 3 website.
The math module also contains variables. For example, math.pi contains the mathematical constant π. To find the area of a circle, you could use the following calculation:
area = math.pi * radius**2