Proyect C# Area of a Circle

Question

Hi, im doing the proyects of C# but i can't do the Area of a Circle proyect, I do it by this way, please help me with the answer and why is that
const double pi = 3.14;
double radius; 5

double radiusPow = Math.Pow(radius, 2);
double result = pi * radiusPow;

Console.WriteLine(result);

Answer 1

Your code needs to take the radius as input instead of giving a direct value

double radius =Convert.ToDouble(Console.ReadLine());
//double radius = 5