e_09

package ejercicio9;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class EJERCICIO9 {

    public static void main(String[] args) throws IOException {
        // TODO code application logic here
  float PI=3.14159F;
   float a,r;
  BufferedReader in=new BufferedReader(new  InputStreamReader(System.in));
 System.out.println("Radio: ");

 r=(float) Integer.parseInt(in.readLine());//ojo
 a=(float)(PI *(Math.pow((double)r,2.0)));

 System.out.println("");
 System.out.println("Area:" + a);
 System.out.println();
     
    }
}