Question:
The figure below is made up of two big identical semicircles, 8 small identical quadrants and 16 squares. The side of each square is 4 cm. Find
(a) the radius of the big semicircles and
(b) the total area of the shaded parts
(Use π in the calculator and give your answers correct to 2 decimal places)
Solution:
![P6 / Henry Park / 2021 / SA2 / Paper 1 –
Q16 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/06/P6_SA2_2021_Henry_Park_Paper1_Q16-Qns.jpg?resize=400%2C135&ssl=1)
![P6 / ACS / 2020 / SA2 Prelims / Paper 1 – Q27 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/05/P6_SA2_2020_ACS_Paper1_Q27-Qns.jpg?resize=400%2C260&ssl=1)