Answer:
36 sq. meters
Step-by-step explanation:
The shaded region is a triangle, so we can find its area by [tex]\frac{1}{2} bh[/tex]. The base is 18 - 12 = 6, and the height is 12. So, the area is [tex]\frac{1}{2} (6)(12)[/tex] = 36 sq. meters.
Hope this helped! :)
