33. Exemplar Exercise Problems XIX

The sides of a quadrilateral $ABCD$ are $6 cm$, $8 cm$, $12 cm$ and $14 cm$ (taken in order) respectively, and the angle between the first two sides is a right angle. Find its area.

 

Area of the quadrilateral $=$ $\left(i\right)\left(i+\sqrt{i}\right)$$cm^2$