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29.5

Q: What is the diameter of a regulation size basketball?

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regulation size is18 inches in diameter

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The sun is about 864,327 miles in diameter. Venus is about 7,521 miles in diameter, or 0.00870156781 the diameter of the sun. A regulation basketball is about 9" in diameter, so multiplying 0.00870156781 by 9" we get just under 2 millimeters. 2 mm is about the thickness of a nickel, or the size of a small apple seed or large grain of sand.

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.

The Men's Size 7 regulation basketball has a circumference between 29.5-30 inches. It weighs 20-22 ounces, and has a diameter of 9.39 inches.The Women's Size 6 regulation basketball has a circumference between 28.5 and 28 7/8 inches. It weighs 17.5-19.5 ounces and has a diameter of 9.07 inches.The Juniors Size 5 basketball has a circumference between 27.25 to 27.75 inches. It weighs 16.6-18 ounces and has a diameter of 8.7 inches. It is recommended for boys and girls under 12 years old (junior league).The mini Size 3 basketball has a circumference between 22 to 22.5 inches. It weighs 10-11 ounces and has a diameter of 7 inches. It is recommended for small children (age 5-8)

The regulation size for basketball nets are all the same at ten feet. The regulation for high school, college, and the NBA/WNBA use nets that are ten feet high.

the answer is 22.5

12 in diameter

A regulation sized basketball is 29.5 inches. A 10 and under size basketball is 28.5. 28.5 is also the regulation size for women's basketball.

A regulation NBA backboard will be rectangular shaped and 54 x 32 inches in diameter.

If your a TRUE basketball player, you should automatically be able to tell if it is a 29.5 (size 7) basketball, BUT, if not, you can ask the person in the store, or it should say size 7 somewhere on the ball.