divide by pi (3.14159)
11.93
regulation size is18 inches in diameter
According to the regulation hoop diameter is 18 inches (inside the rim). Other sizes are available for practice or games other than regulation basketball. Use a search engine to find "basketball" +"hoop diameter".
eighteen inches
Yes
The thickness of a basketball ring is usually no more than 5/8' inches thick. The diameter of the rim is usually 18 inches.
About 30 inches
The size 5 basketball, also refered to as "junior" is 27.5 inches in circumference. That would make the diameter a little over 8.75 inches. (Circumference divided by PI) .
A basketball hoop is 18" in diameter and the formula for circumference is pi x 18" (3.1415 x 18"=56.54866")
If a circle has a circumference of 6 inches the diameter is: 1.91 inches (circumference divided by Pi = diameter).
If a circle has a diameter of 24 inches its circumference is: 75.4 inches (diameter x Pi = circumference).
If the circumference of a circle is 10 inches, the diameter is: about 3.183 inches. (circumference divided by Pi = diameter)
If a circle has a diameter of 12.8 inches its circumference is: 40.21 inches (circumference = diameter x Pi).
The circumference of a circle if its diameter is 20 inches is: 62.83 inches (diameter x Pi = circumference).
If the circumference of a circle is 75 inches, the diameter is: about 23.87 inches. (diameter = circumference divided by pi).
The circumference of a circle, if the diameter is 9.5 inches, is: 29.85 inches (diameter x Pi = circumference)
If the circumference of a circle is 28 inches the diameter is: 8.913 inches (circumference divided by Pi = diameter).
The diameter of a circle with circumference of 25.56 inches is: 8.136 inches (diameter x Pi = circumference).