The area in this case is the area of the rectangle plus the area of the triangle.
[tex]\begin{gathered} \text{Area of the rectangle} \\ A_R=(25ft)(12ft)=300ft^2 \\ \text{Area of the triangle} \\ A_T=\frac{(25\text{ ft)(8ft)}}{2}\text{ = }100ft^2 \\ \text{Total area} \\ A=A_R+A_T=300ft^2+100ft^2=400ft^2 \end{gathered}[/tex]
Wo the area that would be painted is
[tex]400ft^2[/tex]
