I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

The answer is 20
Area of rectangle in between is 2*4=8
Area of 2 triangles that surround the rectangle to make a parallelogram is (3*4)/2=6
Since there are 2 triangles which are they exact same, multiply 6 by 2, then add the result tp 8
8+(6*2)= 20