This trapezoid has been divided into two right triangles and a rectangle.

How can the area of the trapezoid be determined using the area of each shape?

Enter your answers in the boxes.

The area of the triangle on left is
168
in², the area of the triangle on the right is
in², and the area of the rectangle is
in².

The area of the trapezoid is the sum of these areas, which is
in².