The diameter of a volleyball is between 25.6 to 26.4 centimeters. The ball has 18 panels on the circumference. The circumference of the ball is about 65 to 67 centimeters.
The same size ball is used for beach volleyball and for hard-court volleyball. The ball is made from leather or synthetic material such as nylon or rubber. Adults use a ball that weighs 250 to 260 grams. The ball used by children is generally lighter.
Volleyball was developed by William Morgan who was a fitness coach in Massachusetts. The game is played by two teams of six players each. The ground is rectangular in shape and 18 meters by 9 meters in dimension. A net that stands 2.43 meters high divides the volleyball playing field into two equal squares.