MENGHITUNG LUAS DAN VOLUME LINGKARAN :

import jeliot.io.*;

public class MyClass {

public void cetak(){

System.out.print("coba");

}

    public static void main() {

        // Your algorithm goes here.

MyClass x = new MyClass();

x.cetak();

int r;

float volume;

float luas_lingkaran;

System.out.print("masukan r = ");

r = Input.readInt();

volume= (float)((3.14*r*r*r*3)/4);

luas_lingkaran=(float)(3.14*r*r);

   System.out.print(volume);

}

}

import jeliot.io.*;

public class MyClass {

public void cetak(){

System.out.print("coba");

}

    public static void main() {

        // Your algorithm goes here.

MyClass x = new MyClass();

x.cetak();

int r;

float volume;

float luas_lingkaran;

System.out.print("masukan r = ");

r = Input.readInt();

volume= (float)((3.14*r*r*r*3)/4);

luas_lingkaran=(float)(3.14*r*r);

System.out.print("volume");

   System.out.print(volume);

}

}