Answer:
40
Step-by-step explanation:
99 cm²
The area (A) of a triangle is calculated as
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the perpendicular height )
Here b = 18 and h = 11, thus
A = [tex]\frac{1}{2}[/tex] × 18 × 11 = 9 × 11 = 99 cm²
