Please I will give brainiest

Answer:
33 cm
Step-by-step explanation:
I will just show my work
9×3=27 cm (is the area of the rectangle)
1 1/2+1 1/2=3
9-3=6(the bottom of the triangle)
To find the area of the triangle
Area=1/2 of the base times height
6+27=33 cm