Question 6
In the following figure, $AB$ is the diameter of a circle with centre $O$. It is given that $AB=4$ cm, $BC=3$ cm, and $\angle ABD=\angle DBE$. Suppose the area of quadrilateral $ABCD$ is $x$ cm$^2$ and the area of $\triangle DCE$ is $y$ cm$^2$. Find the ratio $x/y$.
