Explanation:
Step 1: Answer the first question
Area of a triangle →
Total Area →
Answer: Option D,
Step 2: Answer the second question
We know that the total side length is 12 but we also know that the triangle base is 4 so we would subtract that from the total length and we get that the rectangle length is 8. We also know that the width is 6 so we multiply 8 by 6 and we add 24. This matches option B
Answer: Option B,