ANSWERS: 1
  • The NCAA which sets the regulations governing college athletics says this: "The circumference of the...ball shall be 28.5 to 29.5 inches with a weight not to exceed 20 ounces. The ball shall rebound to a height of not less than 51 inches and not more than 56 inches when dropped on the playing surface from a height of 6 feet." This rebound height will of course be determined by the air pressure, and material the ball is made from. The NBA rules governing professional basketball states that "the officially approved ball will be inflated to 7.5 to 8.5 pounds pressure".

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