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I know how to optimize, but I'm having trouble starting both. I think the trick to the first one is something to do with similar triangles, but I can't quite articulate an equation to do the problem with. I know the second one requires the volume, and I think the area of a circle or the surface area of a cone might come in handy. I'm fully capable of deriving, and determining the max/minimums. But the second part of one has me stumped throughly.

I can't demand an answer, and I don't really want to be told one. But I implore you very generous people to expediate your help, as I've only been allowed a few hours to do these.

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# Homework Help: Optimization of a racecourse

Can you offer guidance or do you also need help?

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