Answer:
The correct answer is 16.7
Step-by-step explanation:
To find the answer, use the Pythagorean Theorem, which states that the square of the two legs equals the square of the hypotenuse.
a^2 + b^2 = c^2
x^2 + 8^2 = 18.5^2
x^2 + 64 = 342.25
x^2 = 278.25
x = 16.7
