marissa ordered a cover for her swimming pool that is shaped like a trapezoid. the dimensions of the cover are shown in the diagram. which equation can be used to find a, the area of the swimming pool cover in square meters? responses a = 0.5(3.5) (9)x a = 0.5(3.5) (9)x, endfragment a = 0.5(3.5) (9)y a = 0.5(3.5) (9)y, endfragment a = 0.5(3.5 9)x a = 0.5(3.5 9)x, endfragment a = 0.5(3.5 9)y
