### Home > PC3 > Chapter 6 > Lesson 6.2.3 > Problem6-111

6-111.

Harold, the happy concrete guy, got a call on the phone about some concrete he has to pour for an oddly shaped triangular patio. The only information he is given is that the side lengths were $5, 6$, and $8$ meters long.

1. Calculate the angles for Harold so he can stay happy.

Draw and label a diagram. Then use the Law of Cosines to determine the angle measures.

2. What is the area of the patio that Harold will be forming?

$\text{area}=\frac{1}{2}ab\sin\left(\theta\right)$