Question

what percentage of a persons skin would be involved if they had burned their left arm, front of the trunk, and the front of their left leg?
a 31.5%
b 36%
c 40.5%
d 45%

Explanation:

Step1: Recall burn - percentage values

The front of an arm is 4.5% of the body's surface area, the front of the trunk is 18%, and the front of a leg is 9%.

Step2: Calculate total percentage

Add the percentages together: $4.5\%+18\% + 9\%=31.5\%$

Answer:

A. 31.5%