Create a Python function that calculates the area of a circle using a function. Pass the value of radius as parameter. Test the function from Python. Use the function created in #1 in a program that prompts for radius of the circle and calculates the area when called. Output the area to include one decimal place. Given the python program: def f(n): n + = 3 n = 5/(3 - n)return n print(f(5)) r = f(-4) print(r) Explain in detail each statement in the program. What is the result of a call to f(0)? What would you suggest to correct the program? Create a Python function for the following scenario Input: Number of rows for the pattern {For example, 4} 1 12 123 1234