Answer: Use the parallelogram. It is 1/3 of the pentagon if you split it into 3 even parts. Then use the trapezoid. It is 1/2 of the pentagon. You need to look for how much of the parallelogram (1/3 of total or hexagon) you need to cover 1/2 of the hexagon or a trapezoid.
To help better see the image in your mind, use the picture.
The parallelogram cannot cover the whole entire trapezoid. Leaving a little bit of space. That space is the size of the triangle. Which takes up the space of 1/2 of the parallelogram.
So in total, you need 1 1/2 of the parallelogram to cover the entire trapozoid. And so 1/2divided by 1/3=1 1/2.