SEAMO 2027 - Paper D - SET 09 - Self-study Question 17

Question 17

The quadrants $OAD$ and $OBC$ have radii 5 cm and 10 cm, respectively, and $\angle COD=30^\circ$. Find the area of the shaded region $ABCD$ in $\text{cm}^2$.

Question illustration

$8\pi$
$\frac{35\pi}4$
$\frac{55\pi}4$
$15\pi$
$\frac{75\pi}4$