Please help im confused

40 square units

Step-by-step explanation:

so area of a rectangle is length times width but the triangle is half of that so you do length(8) times width(10) to get 80 but since the triangle is half the size you divide it by 2 so 80/2 (/means division sign) equals 40 but make sure you put square units or else the teacher will take off points

hope this .

r3t40

is this part of a question or something