SEAMO 2019 — Paper C — Grade 5–6 Question 11

Question 11

In the quarter circle, $\angle ADB=90^\circ$ and $C$ is the midpoint of arc $AB$. A semicircle has diameter $DB$. If shaded region $x$ has area $12\text{ cm}^2$, find shaded region $y$.

Question illustration

$12$
$14$
$12\pi$
$14\pi$
None of the above