
Write a program with one userdefined function to convert weight from pound to kg.

By using three userdefined functions, you are asked to write a program to calculate the area of a circle.
Function input – ask user to input the radius
Function calculate_area – calculate the area of the circle
Function display – display the radius and the area of the circle 
By using three userdefined functions, you are asked to write a program to count the total of 10 marks entered by user and the average. Then, the program should be able to process number of marks that are bigger than the average. The program will display all the marks entered, average and the number of marks that are bigger than the average.
Function 1 – to enter 10 marks
Function 2  to find the average
Function 3 – to count a number of marks entered that are bigger than average
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