static double find_area ( int r , int d ) {
  double R = d / PI ;
  R += Math . pow ( r , 2 ) ;
  R = Math . sqrt ( R ) ;
  double area = PI * Math . pow ( R , 2 ) ;
  return area ;
}

static double find_area ( int r , int d ) { double R = d / PI ; R += Math . pow ( r , 2 ) ; R = Math . sqrt ( R ) ; double area = PI * Math . pow ( R , 2 ) ; return area ; }
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