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 / Pei Chun / 2019 / SA2 / Paper 2 – Q16 [5 marks] Reader Submission #58](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/08/ReaderSub_58-Qns.jpg?resize=400%2C260&ssl=1)