To find the area of any quadrilateral we can divide it into two triangles and then the area can be easily calculated by calculating the area of both the triangles separately.
Area of quadrilateral
Where h1 and h2 are the height of both the triangles and d is the length of common diagonal i.e.AC.
Find the area of quadrilateral ABCD.
In the quadrilateral ABCD,
BD is the common diagonal so .
Height of the two triangles are and .
Area of quadrilateral ABCD