Final answer:
The "rule of nines" is used to estimate the percentage of body surface area affected by burns. For a person with blisters on the anterior chest and circumferential superficial burns on both lower extremities, the percentage of burn is 54%.
Step-by-step explanation:
The "rule of nines"
The "rule of nines" is used to estimate the percentage of body surface area affected by burns. According to this rule, the anterior chest represents 18% of the body surface area, while each lower extremity represents 18% as well. Therefore, the percentage of burn for a person with blisters on the anterior chest and circumferential superficial burns on both lower extremities would be 18% + 18% + 18% =
54%.Answer: 54%