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 / Henry Park / 2020 / SA2 Prelims / Paper 1 – Q02 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/08/P6_SA2_2020_Henry_Park_Paper1_Q02-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / ACS / 2018 / SA1 / Paper 2 – Q04 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/05/P6_SA1_2018_ACS_Paper2_Q04-Qns.jpg?resize=400%2C260&ssl=1)