What is the circumference of a basketball?

Answer 1

68 to 70 cm or 27 to 28 inches

Answer 2

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.

Answer 3

The size of an NFL football can vary slightly, but the width is approximately 6.6 inches.

Answer 4

68 cm (27 ins) <= circumference <= 70 cm (28 ins)

Answer 5

A soccer ball is 27 to 28 inches in circumference.

Circumference is pi times diameter, or 2 times pi times radius.

Radius = circumference divided by (2 times pi).

Answer 6

The football used for FIFA World Cup is called Size 5. This has a circumference of between 69 and 71 centimetres.

Answer 7

68 to 70 cm or 27 to 28 inches

Answer 8

28 inches at the widest point