Question:
Benson uses some wirte to make the figure as shown. He made 2 identical wire structures and joined them with a piece of wire AB. Each wire structure was formed by a large semi-cirlce, a small semi-circle and 2 straight lines.
(a) What is the radius of a small semi-circle?
(b) Find the length of wire used to make the figure.
Take π = 3.14
Solution:
![P6 / Methodist Girls / 2021 / SA2 / Paper 1 – Q16 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/06/P6_SA2_2021_Methodist_Girls_Paper1_Q16-Qns.jpg?resize=400%2C75&ssl=1)
![P6 / CHIJ / 2020 / SA2 Prelims / Paper 1 – Q18 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/08/P6_SA2_2020_CHIJ_Paper1_Q18-Qns.jpg?resize=400%2C151&ssl=1)