Expressions Exercises: Part B

1. Write a single statement that calculates the hypoteneuse of 
a right-angled triangle with sides a=4 and b=5.
Write the same statement again in a different way (using 
different Math class methods).

2. Write a program that calculates the area and circumference of a circle.
The circumference is 2 times PI times radius.
The area is PI times radius squared.
Use appropriate variable names and data types.
Display your output in a professional and user-friendly way.