A Basketball goal, or hoop, is about 56½ inches in circumference (56.55 inches). The rim is 18 inches in central diameter, and the top of the rim should be exactly 10 feet off the ground.
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The circumference of the ball is 29.5 inches. It weighs 22 ounces.
The width is approximately 9.39 inches. The Basketball goal is 18 inches wide (interior).