How do I work this out

Answer:
Step-by-step explanation:
4x3= 12 <this is the full squared and because a triangle is half of a square, you divide by 2 to get 6 and that is your area
Answer:
6
Step-by-step explanation:
you would use the area of a triangle which is 1/2 bh and you would do 4 divided by 2 which is 2 then you would multiply 2 and 3 and then you get 6