Question

I need help on number 8 please

Answer 1

Well, the area of a trapezoid is A = ($b_{1}$ + $b_{2}$) * h * 1/2 so you can use the area of a parallelogram, which is A = l * w, by splitting the trapezoid into 2 triangles and one rectangle. So you'd use A = l * w for the rectangle and A = 1/2bh for the triangles. You'd get the same answer!