A size 3 ball requires a size 3 hoop. A size 3 hoop is a 14" diameter hoop. (Usually with a 32" backboard.)
regulation size is18 inches in diameter
The circumference is 28.5", also known as size 6
they use an nba sized ball
Women use a size 6 ball, instead of the size 7 for men. It is lighter and smaller than the men's. That is about all I think, basketball is not the sport to be sexist.
When Dr. Naismith invented basketball he didn't have a 'basketball' to use. So, he looked around his gymnasium and decided that a soccer ball was the right size and he used that.
Diameter of a standard basketball is 29.5 to 30 inches (74.9 to 76.2 centimeters).
Two basketballs can fit in the hoop so the ball is half the size of the rim
12 in diameter
a ball about 80 feet in diameter
The National Basketball Association allows only one official ball: The ball must be the official NBA game ball manufactured by Spalding. The ball is orange in colour, 29.5 (749 mm) inches in circumference and weighs 22 ounces (624 g) (size 7). It must also be inflated to between 7.5 and 8.5 pounds per square inch.
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.
A bowling ball's diameter is 8.5 inches, whereas a giant squid can have eyes 10.5 inches wide (the size of a basketball) or larger.
regulation size is18 inches in diameter
Answer #1:A standard size basketball will be approximately 9 inches (22.86 centimeters) in diameter. It will measure approximately 30 inches (76 centimeters) in circumference and will be made out of leather with a hollow air-filled bladder inside the interior.=============================Answer #2:In the NBA and NCAA, the official ball for men's competition is 29.5 inches incircumference (size 7, or a "295 ball") and weighs 22 oz. If women are playing,the official basketball size is 28.5 inches in circumference (size 6, or a "285 ball")with a weight of 20 oz.Diameter = Circumference/piFora 295 ball, D = 9.39 inches (rounded)For a 285 ball, D = 9.07 inches (rounded)
A Size 7 basketball is usually 29.5 incheshttp://www.hrsinformer.com/2009/10/how-to-choose-a-basketball/
If you are talking regulation sizes... In the NBA, Basketballs are required to be nine inches in diameter, this is a circumference of about 28 inches. In Football (Soccer) there are three sizes of which can be used, numbered 3,4, and 5. Size 3 balls are used for children under the age of 8. These balls are generally 23-24 inches in circumference making them smaller then a NBA Basketball. Size 4 balls are used between the ages of 8-12. They have a circumference of 25-26 inches making them also smaller then a NBA Basketball. Size 5 is the standard international match ball for all ages. The size 5 ball has a circumference of 27-28 inches making it the same size as a NBA Basketball.
29.5 inches