Please help me been stuck forever

Answer: [tex]60\ cm^2[/tex]
Step-by-step explanation:
In the given picture, it can be seen that the height of the shaded triangle = 10 cm
The base corresponding to the height = 12 cm
We know that the area of a triangle is given by :-
[tex]\text{Area}=\frac{1}{2}\times \text{base}\times \text{height}[/tex]
Now, the area of the shaded triangle will be
[tex]\text{Area}=\frac{1}{2}\times \text{10}\times \text{12}\\\\\Rightarrow\text{Area}=60\ cm^2[/tex]
Hence, the area of the shaded triangle =[tex]60\ cm^2[/tex]