Answer:
99cm²
Step-by-step explanation:
Area of a Triangle: [tex]A=\frac{1}{2} bh[/tex]
B- base
H- height
We are given a base of 18 cm and a height of 11cm.
[tex]A=\frac{1}{2} 18*11\\\\A=\frac{1}{2} 198\\\\\boxed{A=99}[/tex]
The area of the triangle should be 99cm².