Final answer:
The barrier height in a pharmacy for security during business hours typically is around 1.2 meters (4 feet), but can vary based on regulations and pharmacy guidelines; local health authorities should be consulted for exact requirements.
Step-by-step explanation:
The height of a barrier to prevent unauthorized access during pharmacy hours is not strictly a mathematical problem but is more related to security measures and health regulations. A typical over-the-counter barrier in a pharmacy is usually around 1.2 meters (about 4 feet) tall, which is considered sufficient to deter casual access, yet low enough to facilitate communication and transaction between the pharmacist and customers. However, these specifics can vary based on the pharmacy's guidelines, the layout, and local regulations. It is recommended to check with the local health authority or pharmacy board for the proper height required to ensure both security and accessibility during business hours.