Solve 6 one:
6. Find the area of a quadrilateral ABCD, the coordinates of whose verities are A(-3,2), B(5,4), C(7,-6) and (-5,-4)
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https://www.meritnation.com/ask-answer/question/find-the-area-of-the-quadrilateral-abcd-whose-vertices-are-a/coordinate-geometry/4103457