import java.io.*;

public class GeometryCalculator {

int square(int a) {

return a * a;

}

int rectangle(int l, int b) {

return l * b;

}

double circle(int r) {

double pi, area;

pi = 3.14;

area = pi * r * r;

return area;

}

public static void main() throws IOException {

GeometryCalculator obj = new GeometryCalculator();

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

System.out.println("SIDE OF SQUARE = ");

int a = Integer.parseInt(br.readLine());

System.out.println("AREA = " + obj.square(a));

System.out.println("Length of L = ");

int l = Integer.parseInt(br.readLine());

System.out.println("Length of B = ");

int b = Integer.parseInt(br.readLine());

System.out.println("AREA = " + obj.rectangle(l, b));

System.out.println("Enter the radius of CIRCLE =");

int r = Integer.parseInt(br.readLine());

System.out.println("AREA OF THE CIRCLE = " + obj.circle(r));

}

}