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  1. using static System.Console;
  2. using static System.Math;
  3.  
  4. public class Program {
  5.     public static void Main() {
  6.         if (double.TryParse(ReadLine(), out var raio)) WriteLine($"A = {PI * Pow(raio, 2):N4}");
  7. 	}
  8. }
  9.  
  10. //https://pt.stackoverflow.com/q/286350/101
Success #stdin #stdout 0.01s 15820KB
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stdin
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Standard input is empty
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Standard output is empty
https://ideone.com/ZPaUra
language:
C# (gmcs 5.20.1)
created:
3 years ago
visibility:
public

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