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2. The attempt at a solution
I want to go width times delta height. To do this I must describe width in terms of height.
Here they used the Pythagorean theorem which is weird to me because I don't see a nice triangle. Where h meets w the triangle extends outside of the circle. We divide w by 2 I guess to treat it as like a radius?
I guess my question is how do I describe width in terms of height in this context?
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