Find the area of the quadrilateral of one of its diagonals is 20 cm and its off sets 9 cm and 6 cm? July 15, 2019 – by admin Find the area of the quadrilateral of one of its diagonals is 20 cm and its off sets 9 cm and 6 cm? A. 120 sq mB. 150 sq m C. 110 sq m D. 300 sq m