Chua Tze Ren's answer to Kathy's Secondary 4 E Maths Singapore question.

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Chua Tze Ren
Chua Tze Ren's answer
15 answers (Tutor Details)
Hi, hope this helps. Please take some time to read the explanations written in pencil. Also, as mentioned in the question, you need to be careful in leaving answer in terms of pi for the first part and to the nearest cm2 for the second part.