Explanation: Since, According to the mid point theorem, the line segment connecting the midpoints of the two sides of a triangle is parallel to the third side and is half of the third side of triangle.
Here, FD is the line segment connecting to the midpoints F and D and it is parallel and half of the third side AC.
Thus, FD=AC/2⇒ AC=2FD
But, according to the question, FD=16 so, AC=2×16=32