java)

13)

Assume the class Cylinder exists, and that has the following method. Assume both radius and height are global instance variables declared as double.

public double calcVolume() { return Math.PI * radius * radius * height; }

You decide that a static method (also called calcVolume) for calculating volume (of a theoretical cylinder) might be useful to client coders.

Write the static method.

Then rewrite the instance method shown above to leverage the new static method (thus reducing code duplication).