Answer:The height of the pharmacy area is 17 feet
Explanation:
The formula for determining the area of a rectangle is expressed as
Area = length × width
The pharmacy area is rectangular. The height of the pharmacy area becomes the width of the rectangle.
The area of the pharmacy area is given as 391 ft^2
The length of the pharmacy area is given 23 feet
Therefore
23 × h = 391
h = 391/23 = 17 feet