help me with this math problem

Answer:
15.49
Step-by-step explanation:
visually picture the diagram, the adjacent side of triangle will be equals to 7.6ft, the height will be 13.5, we use Pythagorean theorem, 7.6^2 + 13.5^2 = x^2
solve, for x by square rooting x which will give 15.49
D is the answer also what you can do when u need to solve a question mark out the ones than can’t be the answer and find the close one to the answer