QUESTIONS

Why are the statements on Lines $9$ and $10$ necessary?

How else could you write the statement on Line $9?$

If the program does not include the outer selection structure, what will the program display if the user enters the numbers $3$ and $10$ as the choice and radius, respectively?

What are the scope and lifetime of the choice and radius variables?

What are the scope and lifetime of the rad variable used in the getArea function?

What are the scope and lifetime of the PI constant and the area variable?

What are the scope and lifetime of the rad variable used in the getDiameter function?