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RidiculousName

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I have been looking around for information on how to find the perimeter of an odd shape, but I can't find any explanations that seem to fit because the given shape is partially rounded. I already know the answer is \(\displaystyle 16 + 2\pi\) but I am unsure how they came to it. I'm guessing they get \(\displaystyle 16\) from \(\displaystyle 7 + 3 + 3 + 3\), and \(\displaystyle 2\pi\) by halving the value of the length of the dotted line and multiplying by \(\displaystyle \pi\), but I don't trust myself to guess.

View attachment 8236

View attachment 8236

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