static void Main(string[] args)
{
double area1, peri1;
Rectangle rect1 = new Rectangle();
rect1.rectangle(30, 40);
area1 = rect1.findArea();
peri1 = rect1.findPeri();
Console.Write("Area: ");
Console.WriteLine(area1);
Console.Write("Perimeter: ");
Console.WriteLine(peri1);
Console.ReadKey();
}
