Answer:
The height is 39 meters above sea level
Explanation:
The function that relates the person's eye level above sea level (h) and the kilometers the person can see to the horizon (d) is:
d = 3.6*√h
If the person can see 22.5 kilometers to the horizon, then the height of her eye level above sea level is obtained replacing this d value in the equation and solving for h, as follows:
22.5 = 3.6*√h
22.5/3.6 = √h
6.25^2 = h
h ≈ 39