How large is a regulation size basketball in the NBA?
The official size of the basketball used by the NBA is 29.5 inches in circumference.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: How large is a regulation size basketball in the NBA?
### Input: 
### Response: The official size of the basketball used by the NBA is 29.5 inches in circumference.