Circle Calculation

Objective

To get more practice with using functions.

Task

Your task is to write a program that will read in the radius of a circle, and print out the diameter, circumference and area.

Your program should use a separate function for doing each calculation, and should use parameters and return values to pass information back and forth.

The formulas are given below:

$diameter = 2 \times radius$

$area = \pi \times radius^2$

$circumference = 2 \times \pi \times radius$

Details

Write the functions to do each calculation.
Test that each one works.
Write main to ask the user to enter the radius, then call each function, and print the results.
$\pi$ is available in Java as Math.PI

Submitting

When your program works, email the code to ifinlay@umw.edu.