Final answer:
Using the Rule of Nines, the total body surface area burned for a patient with burns to the entire right arm and leg is 27%.
Step-by-step explanation:
The percentage of body surface area (BSA) burned for a 46-year-old male who has sustained burns to his entire right arm and leg can be estimated using a standardized tool like the Rule of Nines in burn assessment. In this tool, an adult's entire arm is approximately 9% of the body's surface, and the entire leg is about 18%. Therefore, the burn on the right arm would be 9%, and the burn on the right leg would be 18%. When added together, the total BSA burned for both the right arm and leg is 27%.