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 / River Valley / 2019 / SA2 / Paper 2 – Q02 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/07/P6_River_Valley_2019_Prelims_Paper2_Q02-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Maha Bodhi / 2019 / SA2 / Paper 2 – Q10 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/06/P6_Maha_Bodhi_2019_Prelims_Paper2_Q10-Qns.jpg?resize=400%2C260&ssl=1)