Have 4 intro level python programs that need to be written

Have 4 intro level python programs that need to be written, would like to know how much in total. Also what would be the estimated completion time? Here is an example: Write a program that defines a value-returning function named circle that takes the radius of a circle as its sole argument and returns both the area and circumference of the circle. Prompt the user to enter the radius from the keyboard in the main function and then call the circle function. The main function should "catch" the values returned by circle and display both the area and circumference accurate to three decimal places. SAMPLE OUTPUT Enter circle radius 10 Circle area is 314.159 Circle circumference is 62.832