Program untuk menhitung luas lingkaran:
import java.io.*;
class luas {
public static void main (String[]args) throws IOException {
String temp;
int r;
System.out.println ("\n:::::>>>>PROGRAM LUAS LINGKARAN<<<<::::::");
BufferedReader bil=new BufferedReader (new InputStreamReader (System.in) );
System.out.print ("masukkan jari-jari lingkaran:");
temp = bil.readLine();
r = Integer.parseInt (temp);
String nama= "Muhammad Agus Khakim";
String nama1= "Ardi Harimawan";
String nama2= "Firli Fuadi";
String nim= "09.12.4133";
String nim1= "09.12.4143";
String nim2= "09.12.4138";
String kelas= "S1SI3H";
double pi= 3.14;
luas= pi*r*r;
System.out.println ("\nluas lingkaran: "+luas);
System.out.println ("\n:::::::::::::::::::::::::::>>>>>");
System.out.println ("nama : 1."+nama);
System.out.println ("\n\t2."+nama1);
System.out.println ("\n\t3."+nama2);
System.out.println ("\nnim : 1."+nim);
System.out.println ("\n\t2."+nim1);
System.out.println ("\n\t3."+nim2);
System.out.println ("\nkelas: "+kelas)
System.out.println ("::::::::::::::::::::::::::::>>>>>");
}
}
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