using System;
class CyrclePerimeter
{
static void Main()
double pi = Math.PI;
int i = 0;
while (i < 3)
double r = double.Parse(Console.ReadLine());
Console.WriteLine("Perimeter: ");
Console.WriteLine((2*pi)*r);
Console.WriteLine("Area: ");
Console.WriteLine(pi*r*r);
i++;
}