does 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

The area of the trapezoid is the sum of the areas of the rectangle and the two triangles. Then, the area of the rectangle is:
[tex]A_{\text{rect}}=14\cdot12=168in^2[/tex]And the area of each triangle is:
[tex]A_{\text{triangle}}=\frac{12\cdot2}{2}=12in^2[/tex]The area of the trapezoid is:
[tex]\begin{gathered} A_{\text{Trapezoid}}=A_{\text{rect}}+2\cdot A_{\text{triangle}}=168+2\cdot12 \\ \therefore A_{\text{Trapezoid}}=192in^2 \end{gathered}[/tex]