diameter bola tenis

The International Tennis Federation (ITF) defines the official diameter as 6. resep bola kentang sosis 54–6. resep bola kentang sosis 86 cm (2 57–2 70 inches) Balls must have masses in the range 56 0–59 4 g (1 98–2 10 ounces) A tennis ball generally has 12 pounds per square inch (80 kPa; 0 8 atm) more of a nitrogen and oxygen mixture than the sea level ambient air pressure