Answer:
the area of a circle simply because all you need is the diameter x π or the radius x 2 x π (π=3.14)
the area of a trapezoid is much more difficult because there is only one parallel side so this means that there are basically two triangles on the side of a square or rectangle, so then you need to take the base of one of those triangles and multiply it by the height of the trapezoid then divide that by 2, then you need to follow the same steps on the other triangle, and now that you have the 2 triangles out of the way, now you have your square or rectangle and you multiply the base x height then you add all your numbers up and you have the area of a trapezoid
Explanation: