Find the area of quadrilateral ABCD whose sides AB=13cm, BC=12cm, CD=9cm, DA=14cm and the diagonal BD=15cm.?

A:B = 8:15-->(A/B) = (8/15). Similarly, (B/C) = (5/8) and (C/D) = (4/5). Then (A/B)(B/C)(C/D) = (A/D) = (8/15)(5/8)(4/5) = (160/600) = (4/15) and A:D 4:15.

A:B = 8:15 OR A/B =8/15 OR B= 15A/8 B:C=5:8 OR B/C= 5/8 OR C= 8B/5 = 8/5x15/8A= 3A C:D=4:5 OR C/D= 4/5 OR D=5C/4= 5/4x3 A= 15A/4 SO A / D= 15/4 OR A : D= 15: 4 ANSWER.

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