Answer:
18.8 miles.
Step-by-step explanation:
(b)(h)/2 = A.
In this circumstance, you are solving for h.
Isolate h.
h = 2 x A/b
Now, substitute 102.46 for A and 10.9 for b.
h = 2 x 102.46/10.9 = 2 x 9.4 = 18.8.
h = 18.8mi.
