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A standard NBA basketball is 9.43 to 9.51 inches in diameter, or 29 5/8 to 29 7/8 inches in circumference. It is inflated to a pressure of 7.5 to 8.5 pounds. More »

www.reference.com Sports & Active Lifestyle Classic Sports Basketball

Basketball was invented in 1891 by Dr. James Naismith as the result of a challenge by Dr. Luther Halsey Gulick, the director of the physical education department at the YMCA International Training School in Massachusetts... More »

www.reference.com Sports & Active Lifestyle Classic Sports Basketball

One slang term for basketball is "rock." Sentences including the term are "go ahead and shoot the rock," and "pass the rock to me." To "protect the rock" entails being careful when dribbling or otherwise handling the bas... More »

www.reference.com Sports & Active Lifestyle Classic Sports Basketball
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An NBA basketball rim is 10 feet off the floor on which the game is played, and measures a diameter of 18 inches. In order to score a field goal in basketball, players must throw the ball through the rim and the attached... More »

www.reference.com Sports & Active Lifestyle Classic Sports Basketball

A standard professional basketball rim has a circumference of 30 inches. Its diameter is 18 inches, and the top of the rim is 10 feet in height from the floor. More »

www.reference.com Sports & Active Lifestyle Classic Sports Basketball

A regulation NBA basketball must contain between 7 1/2 and 8 1/2 pounds of pressure per square inch, or PSI. The ball also must exhibit an official NBA approval mark. More »

www.reference.com Sports & Active Lifestyle Classic Sports Basketball

The official height of a regulation NBA basketball hoop is 10 feet from the floor, and the backboard extends another 3.5 feet vertically and 6 feet horizontally. The hoop is 18 inches in diameter. The height of the hoop ... More »

www.reference.com Sports & Active Lifestyle Classic Sports Basketball