I did the best I can with the image but here's the question:
Find the Area of the shaded triangle below:
Treat BC as the base, and the height would be the perpendicular distance from A to BC.
Distance from A to BC = 8 - 2 = 6.
BC = 7 - 4 = 3
Then, we use the formula \(A = \dfrac{bh}{2}\) to determine the area.
You can try to finish it from here.