Question:
A square hall ABCD is fitted with a semi-circle stage as shown. The shaded stage has the side DC of the hall as its diameter and a perimeter of 40 m. The perimeter of the unshaded part of the hall is 64 m. What is the area of the shaded stage in terms of π?
Solution:
![P6 / Tao Nan / 2019 / SA1 / Paper 2 – Q09 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/05/P6_Tao_Nan_2019_SA1_Paper2_Q09-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / ACS (Junior) / 2021 / SA2 / Paper 2
– Q05 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/05/P6_SA2_2021_ACS_Junior_Paper2_Q05-Qns.jpg?resize=400%2C260&ssl=1)