Question:
A piece of wire was bent to form the following figure which was made up of 2 circles. The diameter of the big circle to the diameter of the small circle is in the ratio of 2 : 1. There was 4 cm of the wire left after making the figure. Find the total length of the wire. (Take π = 22/7)
Solution:
![P6 / Catholic High / 2020 / SA2 Prelims / Paper 1 – Q21 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/06/P6_SA2_2020_Catholic_High_Paper1_Q21-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / CHIJ / 2020 / SA2 Prelims / Paper 2 – Q07 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/08/P6_SA2_2020_CHIJ_Paper2_Q07-Qns.jpg?resize=400%2C260&ssl=1)