Question:
The figure below is formed using 3 squares of different sizes. The area of the figure is 285 cm². The area of the shaded square is 64 cm². The length of the straight line AB is 27 cm. The length of each square is a whole number when measured in cm. Find the length of the smallest square.
Solution:
![P6 / ACS / 2018 / SA2 / Paper 2 – Q05 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2019/07/P6_ACS_2018_Prelims_Paper2_Q05.jpg?resize=400%2C260&ssl=1)
![P6 / CHIJ / 2018 / SA2 / Paper 2 – Q08 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2019/08/P6_CHIJ_2018_Prelims_Paper2_Q08.jpg?resize=400%2C260&ssl=1)