import javax.swing.*;
public class Sphere implements IGeometry{

	
	private double radius;
	
	public Sphere() {	
	   String userInput = "";
	   userInput = JOptionPane.showInputDialog("Enter a radius");
	   radius = Double.parseDouble( userInput );
       }

	public double perimeter(){
		return( 3.14159 * 2.0 * radius );
	}

	public double area(){
		return( 3.14159 * radius * radius );
	}

	public double volume(){
		return( (4/3)* 3.14159 * radius * radius * radius );
	}
	
	public void identify() {
		System.out.println("I am a SPHERE");
	}
	
} //end class