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Java - Hitung Luas & Keliling Persegi

Quiz 2
package quiz2;

import javax.swing.*;
public class Quiz2 {
    public static void main(String[] args) {
        String tPanjang, tLuas, tLebar;
        int panjang,luas, lebar;
     
        JOptionPane.showMessageDialog(null,"Pemprograman Java", "Quiz 2", 2);
        tPanjang = JOptionPane.showInputDialog(null,"Tentukan Panjang Persegi", "Konfirmasi", 2);
        tLebar = JOptionPane.showInputDialog(null,"Tentukan Lebar Persegi", "Konfirmasi", 2);
     
        panjang = Integer.parseInt(tPanjang);
        lebar = Integer.parseInt(tLebar);
     
        System.out.println("Panjang: "+panjang);
        System.out.println("Lebar: "+lebar);
        System.out.println("Luas Persegi Panjang: "+ (panjang*lebar)); //rumus luas persegi
        System.out.println("Keliling Persegi Panjang: "+ 2*(panjang*lebar)); //rumus keliling
    }
}

Contoh
Input : Panjang = 5; Lebar = 10
Output: Luas persegi panjang : 50; keliling persegi panjang : 100

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