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- public class lingkaran{
- private double radius;
- public lingkaran(double radius){
- this.radius=radius;
- }
- public void Luas(){
- double luas= 3.14*radius*radius;
- System.out.println(“Luas lingkaran: “+luas);
- }
- public void Keliling(){
- double keliling= 2.0*3.14*radius;
- System.out.println(“Keliling Lingkaran: “+keliling);
- }
- public static void main(String[]args)throws Exception{
- DataInputStream dis= new DataInputStream(System.in);
- System.out.print(“input radius: “);
- String input= dis.readLine();
- double i= Double.parseDouble(input);
- lingkaran A= new lingkaran(i);
- A.Luas();
- A.Keliling();
- }
- }
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