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30 inches - The circumference of a Basketball varies according to the governing organization's rules. According to the FIBA, it is 78 cm (30.7"). In the NBA, it is 29 1/2" to 29 3/4" around the channels and 29 5/8" to 29 7/8" across the channels. In the NCAA the maximum Circumference is 30".

The NBA also recommends these sizes for different athletes

- Size 3: circumference 22 to 22.5 inches, weight 10-11 ounces, recommended for small children (age 5-8). It has a diameter of 7 to 7.16 inches and a radius of 3.5 to 3.58 inches
- Size 5: circumference 27.25 to 27.75 inches, weight 16.6-18 ounces recommended for boys and girls under 12 years old (junior league). It has a diameter of 8.67 to 8.83 inches and a radius of 4.34 to 4.42 inches.
- Size 6: circumference 28.5 to 29 inches, weight 20 ounces, recommended for boys and 12-14 and girls and women age 12 and up. This is the official game ball for women's high school, university and professional basketball. It has a diameter of 9.07 to 9.23 inches and a radius of 4.54 to 4.62 inches.
- Size 7: circumference 29.5 to 30 inches, weight 22 ounces, recommended for men and boys age 15 and up. This is the official game ball for men's high school, university and professional basketball. It has a diameter of 9.39 to 9.55 inches and a radius of 4.7 to 4.77 inches.

Q: What is the circumference of a basketball?

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which circumference of the basketball ring are you trying to calculate? 2d or 3d -"... 3d

28.5" in circumference

The men's size seven basketball has a circumference between 29.5 and 30 inches. The women's size six basketball has a circumference between 28.5 and 28 7/8 inches. The junior size five basketball has a circumference between 27.25 and 27.75 inches. The mini size three basketball has a circumference between 22 and 22.5 inches.

No

20 to 22 ounces and 29.5 to 30 inches in circumference for mens basketball.

No

A womens basketball is 28.5" in circumference and a mens basketball is 29.5" in circumference.

The center circle on an NBA regulation basketball court has a circumference of 37.7 feet (37 feet 8.4 inches).

30" for men

the answer is 22.5

It is 144.5 cm.

Mens basketball size is 29.5" in circumference and weighs 22 ounces.