static void Main(string[] args)
{
Console.Write("Enter an input as radius");
string strrad = Console.ReadLine();
int intrad = Int32.Parse(strrad);
Circle circle = new Circle(intrad);
double area = circle.Area(intrad);
Console.WriteLine($" The area is {area}");
double circum = circle.Circum(intrad);
Console.WriteLine($"The circumference is {circum}");
Console.Write("Enter an input as side");
string strside = Console.ReadLine();
int intside = Int32.Parse(strside);
square s = new square(3);
area = s.area(intside);
Console.WriteLine($" The area is {area}");
double p = s.perimeter(intside);
Console.WriteLine($"The circumference is {p}");
}
