Question

Write code which takes a double input from the user and creates a circle with that radius. The code should calculate the area of the circle, then double the radius of the circle and print the new area of the circle. Sample run: Enter radius: > 2.0 Area: 12.566370614359172 Radius is being doubled... Area: 50.26548245743669

Answer 1

Answer:import java.util.Scanner;

import (*software used for shapes*);

public class (*enter class name*){

 public static void main(String[] args){

 

   Scanner scan = new Scanner(System.in);

   System.out.println("Enter radius: ");

   double r = scan.nextDouble();  

   Circle c = new Circle(r);

   double area = c.getArea();  

   System.out.println("Area: "+area);

   System.out.println("Radius is being doubled...");  

   r = c.getRadius();  

   c.setRadius(r*2);

   area = c.getArea();

   System.out.println("Area: "+area);

 

Explanation:

I know this is late, but I am putting this here for future people trying to solve this problem.