We then subtract the cost of goods sold ($126,520 m) from total revenues ($144,077 m) to obtain a gross profit of $17,577 m. To obtain the gross profit margin, we divide the gross profit ($17,577 m) by total revenues ($144,077) for a margin of 12.20%.
Outer ear. The outer ear is the external portion of the ear, which consists of the auricle (also pinna) and the ear canal. It gathers sound energy and focuses it on the eardrum (tympanic membrane). Contents.
Description and Function. The outer ear is the portion of the ear that sits atop the skull, which is made of flesh and cartilage. It is the visible part which serves to protect the eardrum. It also collects and guides sound waves into the middle ear.