The penalty area or 18-yard box is an area of an association football pitch. It is rectangular and extends 18 yd (16 m) to each side of the goal and 18 yd (16 m) in front of it. If any part of the ball is over any part of a line demarking the penalty area then the ball is considered to be inside the penalty area.
Penalty arc.
A player taking a penalty kick from inside the penalty area.
A football pitch is the playing surface for the game of association football. Its dimensions and markings are defined by Law 1 of the Laws of the Game, "The Field of Play". The pitch is typically made of natural turf or artificial turf, although amateur and recreational teams often play on dirt fields. Artificial surfaces are allowed only to be green in colour.
The goal line at the Stretford End of Old Trafford in Manchester (1992)
A football goal
The penalty area is the large marked rectangular area. The smaller rectangle within it is the goal area (here, the yellow-shirted goalkeeper is the only player in the goal area). The penalty arc is the curved line adjoining the "top" of the penalty area (here, the red-shirted referee is standing near the arc).
Sido Makmur SP II Field turf located in Indonesia