Question:
The figure shows a square ABDE and a right-angled triangle BCD. AFC is a straight line. DC is twice the length of ED. The area of triangle ABF is 1/6 the area of the square. The area of triangle BCF is 48 cm². What is the length of each side of square ABDE?
Solution:
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Paper 1 – Q20 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/08/P6_SA2_2021_Nan_Hua_Paper1_Q20-Qns.jpg?resize=400%2C260&ssl=1)