I NEED HELP ASAPPP PLS

Answer:
30mm squared
Step-by-step explanation:
The area of a triangle is b x h /2
Therefore, 5x12/2=30
Answer:
30mm squared
Step-by-step explanation:
The area of a triangle is b x h /2
There for 5x12/2=30
you also can add 5+12+13=30