Blog marga Sitanggang

1. Program Menghitung Keliling Lingkaran import java.io.*; class kelilinglingkaran { public static void main(String[] args) throws IOException { InputStreamReader key = new InputStreamReader(System.in); BufferedReader input = new BufferedReader(key); String rad; double rads, luas, kel, phi = 3.14; System.out.print("Masukan Nilai Radius :"); rad = input.readLine(); rads = Double.parseDouble(rad); luas = phi * rads; kel = 2 * phi * rads; System.out.println("Hasil Perhitungan"); System.out.println("Luas Lingkaran :" + luas); System.out.println("Keliling Lingkaran :" + kel); } } OUTPUT 2. Menghitung Derajat  import java.util.Scanner; class derajat { public static void main(String args[]) { Scanner input = new Scanner(System.in); int clfahry; double floktavian, rloke; System.out.print("Masukan Nilai Derajat Celcius : "); clfahry = input.nextInt(); rloke = clfahry * 0.8; floktavian = rlok...

MENGHITUNG SLINDER import javax.swing.*; public class Silinder {     public static void main(String[] args)     {         System.out.println("Program untuk perhitungan silinder :");         String jari = "";         jari = JOptionPane.showInputDialog(" Masukkan jari - jarinya : ");         int r=Integer.parseInt(jari);         String tinggi = "";         tinggi = JOptionPane.showInputDialog(" Masukkan tingginya : ");         int h=Integer.parseInt(tinggi);     System.out.println ("Jari-jari = "+(r)+", tinggi = "+(h));         System.out.println ("Luas alas = "+((3.14*r*r)*2)); ...