Answer:
54 [tex]m^2[/tex]
Step-by-step explanation:
To find the area of a triangle use the formula a = 1/2bh
The altitude is the same as height so we can substitute 12 for h and 9 for b
Now the equation will become
a = 1/2 · 9 · 12
When you multiply it, it become 108/2 = a simplified to a = 54
