using System;
 
public class Test
{
	public static void Main()
	{
 
	var pi = 3.14;
	var r = 10;
	var area = pi * r * r;
	var circum = 2 * pi * r;
 
	Console.WriteLine("The area is {0}", area);
	Console.WriteLine("The circumfrence is {0}", circum);
 
	Test t = new Test ();
	var rev = t.Reverse("Gray");
	Console.WriteLine(rev);
 
	}
 
	public string Reverse(string text)
	{
		string result = string.Empty;
		for(int i = text.Length - 1; i >= 0; i--)
		{
			result += text[i];	
		}
		return result;
	}
}