a$.$ Label the function definitions and the function calls. calculateArea$($radius$)$ and Main$()$

b$.$ The function call and the function definition for calculatedreg each include a variable within the parentheses. The variable in the function call is known as an argument. The variable in the function definition is called a parameter. What is the parameter in the function definition? What is its purpose?

Radius

c$.$ In this example the parameter in the function definition and the argument in the function call have the same name. Is this required?

No it is not required

d$.$ Enter and execute the program. Verify your answer to question $\text{'}c\text{'}$ by changing the variable name in the main function from radius to number. Do not change the parameter variable name in the function definition Does the program still work?

e$.$ Write a line of code that calls the calculateArea function and sends the value $"6"$ as the argument. Add the line of code to the main program and execute it to be sure it works properly.

f$.$ Add another function to the program that calculates and prints the diameter of a circle, given the radius as the parameter. Place the function definition above call to the main function of the program. Write the function below.