Answer to Question #249285 in C# for dhadha

Question

Write a program to calculate the area of a circle and display the reuslt. Use the formula: a=πr^2 where Pi is approximately equal to 3.1416

Answer 1

using System;


namespace App
{
    class Program
    {
        static void Main(string[] args)
        {
            const double PI = 3.1416;
            Console.Write("Enter a radius of a circle: ");
            double r = Convert.ToDouble(Console.ReadLine());
            double area = PI * r * r;
            Console.WriteLine("The area of a circle = {0}", area);
            Console.ReadLine();
        }
    }
}