import java.util.Random;

public class Main {

    public static void main(String[] args) {
        int length, width;
        Random random = new Random();
        length = random.nextInt(100);
        System.out.printf("Length : %d\n", length);
        width = random.nextInt(100);
        System.out.printf("Width : %d\n", width);
        int per = rectanglePerimeter(length, width);
        int area = rectangleArea(length, width);
        System.out.printf("Area: %d; Perimeter: %d\n",area,per);
    }

    public static int rectangleArea( int someLength, int someWidth) {
        return someLength*someWidth;
    }

    public static int rectanglePerimeter( int someLength, int someWidth) {
        return 2*(someLength + someWidth);
    }
}