Figure B i imagine is correct
Answer:

Step-by-step explanation:
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The inner circle circumference is 18 and the outer is 4
According to pythagorean theorem
(sqrt20)² = (sqrt10)² + x², so x = sqrt(20-10) = sqrt 10
the answer is <span>x = sqrt 10</span>
140 = (7/15)x
140/(7/15) = x/(7/15)
300 = x
The elevation change of the Wild Cave tour is 300ft.