Answer:
26
Step-by-step explanation:
Divide the triangle into two separate triangles at the dotted line.
First find the bigger triangle:
1/2 * base * height = 1/2 * 10 * 4 = 20
smaller triangle:
1/2 * b * h = 1/2 * 3 * 4 = 6
Both triangles together:
20 + 6 = 26
