Jason Jing Ming Quek's answer to Sarah Tong's Secondary 4 E Maths Singapore question.

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Jason Jing Ming Quek
Jason Jing Ming Quek's answer
29 answers (Tutor Details)
1st
Hi Sarah, i think the answer key might be wrong with calculation of the perimeter of the sector. I have attached a photo here to show you. The answer should be 22cm. I will attach my solution below. I hope my solution gives you a better understanding.