Pls help me with this code

Question

Area of circle (C#)

Answer 1

I don't understand

Answer 2

Console.WriteLine(pi*radius*radius);

Answer 3

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
const double pi = 3.14;
double radius;

//your code goes here
Console.WriteLine(pi*(r**2));

}
}
}

Answer 4

Thanks

Answer 5

It doesn't work

Answer 6

Pls help me to solve it

Answer 7

Thanks 👍

Answer 8

It worked,but pls explain

Answer 9

I mean the Math.Pow

Answer 10

Thanks so much