SEAMO 2026 — Paper B — Organizer self-practice SET 2 Question 20

Question 20

The diagram shows square $ABCD$ of side 10 cm and a shaded rectangle of area 6 square cm. The interior horizontal and vertical segments are parallel to the sides of the square. Find the area of quadrilateral $EFGH$.

Question illustration

$49\text{ cm}^2$
$51\text{ cm}^2$
$62\text{ cm}^2$
$53\text{ cm}^2$
$56\text{ cm}^2$