please help in writing c# program

Question

create a console-based application named ConvertInchesToCm whose Main() method prompts a user for a number of inches, passes the value to a method that converts the value to centimeters, and then returns the value to the main() method where it  is displayed. An inch is 2.54 centimeters.

b. create a GUI application named ConvertInchesToCmGUI that uses a method. The program convets inches to centimeters when the user clicks a button.