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- import java.util.Scanner;
- public class Lingkaran
- {
- public static void main(String[] args)
- {
- Scanner masukan = new Scanner(System.in);
- int pilihan=9;
- do
- {
- System.out.println("\nMENU\n");
- System.out.println("1. Keliling");
- System.out.println("2. Menghitung Luas Lingkaran");
- System.out.println("3. Keluar");
- System.out.print("Masukkan Pilihan Anda : ");
- pilihan = masukan.nextInt();
- switch(pilihan)
- {
- case 1 : Keliling(); break;
- case 2 : luasLingkaran(); break;
- }
- } while(pilihan != 3);
- }
- private static void Keliling()
- {
- Scanner masukan = new Scanner(System.in);
- float jari2, luas;
- System.out.print("Masukkan nilai jari-jari : ");
- jari2 = masukan.nextFloat();
- luas = 3.14f * jari2 * 2;
- System.out.println("Keliling : " + luas);
- }
- private static void luasLingkaran()
- {
- Scanner masukan = new Scanner(System.in);
- float jari2, luas;
- System.out.print("Masukkan nilai jari-jari : ");
- jari2 = masukan.nextFloat();
- luas = 3.14f * jari2 * jari2;
- System.out.println("Luas Lingkaran : " + luas);
- }
- }
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