How to derive the formula for the circumference of a circle, using the arc length formula.

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Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/super-yoga/v/super-yoga-plans-basic-variables-and-equations?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/why-of-algebra/v/why-we-do-the-same-thing-to-both-sides-multi-step-equations?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It’s…

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