Chapter 6, Problem 6.35PE

(Geometry: area of a pentagon) The area of a pentagon can be computed using the following formula:

     $\text{Area}=\frac{5\times s^2}{4\times \tan \left(\frac{\pi }{5}\right)}$

Write a method that returns the area of a pentagon using the following header:

public static double area(double side)

Write a main method that prompts the user to enter the side of a pentagon and displays its area. Here is a sample run: