I need help I'll give brainliest to the person with the correct answer I'm k12

Answer:
13 units²
Step-by-step explanation:
The length = 13 units
The width = 2 units
[Just count the squares]
The area is 26 units²
[Area = length x width]
The area of the triangle is therefore 13 units²
[26 ÷ 2]