I don't understand how to do this question.. please help thanks!

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secondary 4 | A Maths
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secondary 4 A Maths Singapore

I don't understand how to do this question.. please help thanks!

Date Posted: 5 years ago

done {{ upvoteCount }} Upvotes

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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

Date Posted: 5 years ago

Shermel

5 years ago

thank you!