//Jason B. Bendong
 
import java.util.Scanner;
 
class CircleAreaIO2
{
  public static void main (String[] args) 
  {
    Scanner scan = new Scanner( System.in );
 
    int radius;
    double areaCircle;
 
    System.out.print( "Enter radius: -35. " );
    radius = scan.nextInt();
 
    areaCircle = Math.PI*Math.pow(radius,2);
 
    if ( radius < 0 ){
      System.out.println("Error: must not be negative number");
    }else{
      System.out.println("Area of the circle is: " + areaCircle);
    }
  }	
}

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

LTM1

-35