The rim is actually about twice the diameter of a regulation basketball. In the NBA, the official ball is made of leather and has a circumference of 30 inches (76 cm) and a diameter of 9 inches (23 cm).Which also means,the rim's diameter is 18 inches.
In an official basketball competition event, like an approved NBA game, the rim is located 10 feet above the ground. The rim is attached to a backboard and the hoop is 18 inches in diameter.
The standard diameter of a basketball rim is 45cm.
18"
18 inches in diameter
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.
Two basketballs can fit in the hoop so the ball is half the size of the rim
eighteen inches
no
8 ft is the official NBA height from floor to the rim.
The diameter of the rim is 45 cm so the radius stands at 22.5 cm.
18 inches