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abcd is a trapezium such that Ab||Dc and the diagonals of ABCD intersect at point O. If OD=5cm OB=7cm , AC=18cm then the difference between the length OA and OC is

Answer» abcd is a trapezium such that Ab||Dc and the diagonals of ABCD intersect at point O. If OD=5cm OB=7cm , AC=18cm then the difference between the length OA and OC is


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