I attach the full question in the image below
The answer is L = 202 feet
The setup of this problem can be modeled as a right triangle, and therefore we can apply Pythagoras's theorem
"The square of the longest side of a right triangle is the sum of the square of each of the other two sides"
In this case, the longest side is equal to the length of the zip line (L)
L^2 = A^2 + B^2
A = 40 feet
B = 198 feet
L = sqrt ( (40)^2 + (198)^2)
L = sqrt ( 40804)
L = 202 feet
The correct answer is 202 feet.