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The infinite life of pi - Reynaldo Lopes

TED-Ed Lesson: The ratio of a circle’s circumference to its diameter is always the same: 3.14159... and on and on (literally!) forever. This irrational number, pi, has an infinite number of digits, so we’ll never figure out its exact value no matter how close we seem to get. Reynaldo Lopes explai…

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TED Ed

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