# Maximisation problem (1 Viewer)

#### kpad5991

##### Member
http://https://imgur.com/gallery/108AXA cylinder of height h cm and radius r is enclosed on a cone of height 40cm and radius 12cm. Explain why ABC is similar to ADE? By using Ratios of corresponding sides, show that h=40-10/3r.

The question is Ex 12 G Q20 a, b from the Year 11 2U

Also can you do Q21 d from the same exercise

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#### jazz519

##### Moderator
Moderator
Could you please post the diagram from 20 and what q21 is (if the file is too big u can upload it to imgur or google drive)

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Moderator

#### supR

##### Trials are the best
This is my solution to 21d

I don’t have access to that txt so please tell me if my answer is correct

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#### supR

##### Trials are the best
Just noticed that I was late and Jazz already answered your question, was still fun to have a go anyways

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#### jazz519

##### Moderator
Moderator
This is my solution to 21d

I don’t have access to that txt so please tell me if my answer is correct

Sent from my iPhone using Tapatalk
yep looks all good