SEAMO 2026 Paper D SET 2 – Self-practice Question 16

In the figure below, ABCD is a rectangle, E and F are midpoints of AD and CE, respectively. If the area of $\triangle BDF$ is $7.5\text{ cm}^2$, find the area of ABCD in square centimetres.

The source figure is absent; the following is an authored reconstruction from the stated givens.