A Size 7 Basketball is usually 29.5 inches
The diameter of an NCAA (and NBA) basketball is approximately 9 inches (22.86 cm). This is a size 7 basketball.
The size of a middle school size basketball is 19.5 diameter.
It depends what size basketball you have but the normal size is ten inches.
12 in diameter
A basketball with a diameter of 19.5 is considered a Middle school size basketball. The size 6 women's regulation ball is between 28.5 inches.
A women's basketball is 28.5 cm in diameter
11 inch diameter
regulation size is18 inches in diameter
6.863967284 inches in diameter
No a size 7 basketball a tradition size 12-10 is about right.