Ng Ming Bing's answer to Shermel's Secondary 4 A Maths Singapore question.

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Ng Ming Bing
Ng Ming Bing's answer
53 answers (A Helpful Person)
1st
I) similar triangles to make r the subject so that you can remove r from the equation of volume of the cone,
ii) chain rule
Shermel
Shermel
5 years ago
thank you!