80 mm2. you can find the area of a trapezoid by adding the two parallel sides, dividing that by 2 and multiplying it with the height. so in this case [ (8x4)/2 ] x5
i would split the trapezoid into 2 shapes, the top half with the triangle and the bottom with the square. area of the square would be: 5x4=20 area of the triangle: (5x4)/2= 10 then add the two answers together: 20+10=30 final answer: 30mm^2
