04.ConsoleInputOutputHomework/03.CirclePerimeterArea

//Problem 3.Circle Perimeter and Area
//Write a program that reads the radius r of a circle and prints its perimeter and area formatted with 2 digits after the decimal point.

using System;

class CirclePerimeterArea
{
    static void Main()
    {
        Console.Write("Please,enter radius of a circle r: ");
        double radiusCircle=double.Parse(Console.ReadLine());
        //Perimeter of Circle
        double perimeterCircle = 2 *Math.PI* radiusCircle;
        Console.WriteLine("The Perimeter of Circle is {0:F2}.", perimeterCircle);
        //Area of Circle
        double areaCircle = Math.PI * radiusCircle * radiusCircle;
        Console.WriteLine("The Area of Circle is {0:F2}.",areaCircle);
    }
}