9514 1404 393
Answer:
74.8 m²
Step-by-step explanation:
The hint is usually a good place to start.
A = (1/2)(11 m)(15 m)sin(115°) ≈ 74.8 m²
_____
Additional comment
As is often the case with over-specified triangle problems, the answer you get depends on how you work the problem. Here, the hint suggests you use the angle. If you use the three side lengths, you find the angle is 114.7° and the area is about 74.9 m².
