Find the area of the quadrilateral ABCD whose sides are AB = 13 cm, BC = 12 cm,CD = 9 cm , AD = 14 cm and diagonal BD = 15 cm.
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ERE IS YOUR ANSWER. ..
Area of Quadrilateral = Area of triangle 1 . + Area of triangle 2 .
Area of triangle 1 . = whole root 21 (21-15)(21-13)(21-14)
= whole root 21 (6)(8)(7)
=whole root 7056
=84
Area of triangle 2. = whole root 18 (18-15)(18-9)(18-12)
= whole root 18 (6)(3)(9)
=whole root 2916
= 54
Area of Quadrilateral = 54 + 84
= 138 Ans ....
HOPE IT HELPS YOU. ...
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