document.write('
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  1. import java.util.Scanner;
  2. class lingkaran
  3. {
  4.    static Scanner sc = new Scanner(System.in);
  5.    public static void main(String args[])
  6.    {
  7.       System.out.print("Masukan Jari-Jari Lingkaran: ");
  8.       double radius = sc.nextDouble();
  9.       double area = Math.PI * (radius * radius);
  10.       System.out.println("Luas Lingkaran: " + area);
  11.       double circumference= Math.PI * 2*radius;
  12.       System.out.println( "Keliling Lingkaran: "+circumference);
  13.    }
  14. }
');