Find the area of the shaded region(s) of each figure. Explain your reasoning. (I provided a picture, you might need to zoom in or scroll on it.)

Answer:
I don’t know about the other 2 but ik A is 15
Step-by-step explanation:
split it into 2 triangles and find the area of each then add the two areas together :) (shown below how to find the area of a triangle)
0.5(height*base length)