Which portion of the middle ear equalizes pressure?

The hollow space of the middle ear is also known as the tympanic cavity. The auditory tube (also known as the Eustachian tube or the pharyngotympanic tube) joins the tympanic cavity with the nasal cavity (nasopharynx), allowing pressure toequalize between the middle ear and throat.

50.27 cm²

Step-by-step explanation:

Subtract the area of the smaller circle from the area of the larger circle

The area of a circle = πr² ( r is the radius )

area = π × 5² - π × 3² = 25π - 9π = 16π ≈ 50.27 cm² ( nearest hundredth )