The problem asks me to show that the maximum possible area for a rectangle(adsbygoogle = window.adsbygoogle || []).push({});

inscribed in a circle of radius R is 2R^2. It also gives a hint saying that I should first maximize the square of the area.

I set the problem up as xy = 2R^2. I decided to work on the left side and wrote it as x(2R). But, I don't know where to go from here. Thanks.

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# Rectangle in a circle

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