3. Implement the following function in the PyDev module functions.py and test it from a PyDev module named te3.py def area(radius: Calculates and returns area of a circle. Use: ar area (radius) Parameters: radius radius of a circle (float > e) Returns: ar area of a circle (float) Sample testing Enter radius: 2.5 Area of circle: 19.63 Test functions.py Choose File No file chosen Submit Results