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![What'd I do wrong this time :( the answer should be 9pi/500 but my calculator says division by 0 error T-T : r/calculus What'd I do wrong this time :( the answer should be 9pi/500 but my calculator says division by 0 error T-T : r/calculus](https://i.redd.it/2q7hbmd6nym91.jpg)
What'd I do wrong this time :( the answer should be 9pi/500 but my calculator says division by 0 error T-T : r/calculus
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