Hitungan Matematika
*** MENGHITUNG LINGKARAN
/*
* To change this
template, choose Tools | Templates
* and open the
template in the editor.
*/
package modul7;
import java.io.*;
public class Soal1 {
public double
luas_lingkaran(int diameter) {
int jari2=diameter/2;
double luas=Math.PI * Math.pow(jari2,2);
return luas;
}
public static void main(String[]args) {
Soal1 mt=new Soal1();
System.out.println(mt.luas_lingkaran(20));
System.exit(0);
}}
*** LUAS LINGKARAN
/*
* To change this template, choose Tools |
Templates
* and open the template in the editor.
*/
package
modul7;
/**
*
* @author pemrograman
*/
import
java.io.*;
public class
Soal1b {
public double
luas_lingkaran(int diameter) {
int jari = diameter / 2;
double luas = (3.14*jari*jari);
return luas;
}
public static void main(String[] args)
throws IOException {
System.out.println("masukkan
diameter");
Soal1 mt = new Soal1();
BufferedReader o = new
BufferedReader(new InputStreamReader(System.in));
int l_lingkaran =
Integer.parseInt(o.readLine());
int tinggi = 10;
System.out.println("luas lingkaran
= "+mt.luas_lingkaran(l_lingkaran));
System.out.println("tabung =
"+mt.luas_lingkaran(l_lingkaran)*tinggi);
System.out.println("kerucut =
"+0.3*mt.luas_lingkaran(l_lingkaran*tinggi));
System.out.println("Bola =
"+1.3*mt.luas_lingkaran(l_lingkaran));
System.exit(0);
}
}
*** MENGHITUNG ZIGMA
/*
* To change this template, choose Tools |
Templates
* and open the template in the editor.
*/
package
modul7;
import javax.swing.JOptionPane;
/**
*
* @author pemrograman
*/
public class
Soal2 {
public int ayy(int x, int n) {
int jumlah = 0;
for (int j = 1; j <= n; j++) {
int nilai = x + (2 * j);
jumlah += nilai;
}
return jumlah;
}
public static void main(String[] args) {
int x =
Integer.parseInt(JOptionPane.showInputDialog("Masukkan Nilai x : "));
int n =
Integer.parseInt(JOptionPane.showInputDialog("Masukkan Nilai n : "));
System.out.println("nilai
x\t:" + x);
System.out.println("nilai n\t:
" + n);
Soal2 ayy = new Soal2();
System.out.println(ayy.ayy(x, n));
}
}
Comments
Post a Comment