import java.util.*;
public class lingkaran
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
double phi = 3.14;
double r, luas,keliling;
System.out.println("Program Luas Lingkaran\n");
System.out.print("Masukkan Panjang Jari-jari : ");
r = input.nextDouble();
luas = 0.5 * phi * r * r;
keliling = 2 * phi * r;
System.out.print("Luas Lingkaran = " + (int)luas + " \nKeliling lingkaran = "+ (int)keliling);
}
}
PROGRAM MENGHITUNG NILAI AKHIR
import java.util.*;
class Tugas
{
public static void main(String[] args)
{
String nama,grade;
int n1,n2,n3 ;
double m1,m2,m3 ,mm;
Scanner input = new Scanner(System .in);
System.out.println("PROGRAM HITUNG NILAI AKHIR");
System.out.print("Nama Siswa : " );
nama =input.nextLine();
System.out.print("Nilai Tugas Mandiri : ");
n1=input.nextInt();
System.out.print("Nilai Quis : ");
n2=input.nextInt();
System.out.print("Nilai Ujian : ");
n3=input.nextInt();
m1= n1 * 0.25;
m2= n2 * 0.30;
m3= n3 * 0.45;
mm= m1+m2+m3;
System.out.print("Siswa yang bernama =" + nama + " ");
System.out.println("Dengan Nilai Persentasi Yang dihasilkan" );
System.out.println("Nilai Tugas Mandiri * 25% =" + (int)m1);
System.out.println ("Nilai Quis * 30% =" + (int)m2 );
System.out.println("Nilai Ujian * 45% = " + (int)m3 );
System.out.print("Jadi Siswa yang bernama" + nama + " ");
System.out.println("memperoleh nilai akhir sebesar " + mm);
System.out.println("Grade nilai yang didapat adalah" + " +" + mm);
}
}
