Question

We are going to write a program that will calculate the area of ​​a circle.

The area enclosed by a circle of radius r is πr², where π (pi) is the constant ratio of the circumference of any circle to its diameter, and r is the radius.

The given program declares a constant pi variable with a value of 3.14.

Complete the program to take the radius as input, then calculate and output the area of the circle.

Dau coroana​ (scrieti in limbajul c#)

Answer 1

Răspuns:

using System;

public class MainClass

{

   private const double PI = 3.14;

   public static void Main(string[] args)

   {

       double radiusValue;

       Console.Write("Enter radius value: ");

       // citim raza cercului

       radiusValue = Convert.ToDouble(Console.ReadLine());

       // calculăm aria cercului

       double circleArea = PI * radiusValue * radiusValue;

       // și o afișăm

       Console.WriteLine("Area is: " + circleArea);

   }

}