Fluid mechanics, Draining a cylindrical tank, some help

AI Thread Summary
The discussion centers on solving a fluid mechanics problem related to draining a cylindrical tank, with a participant reporting a solution time of 80.21 seconds for part b. To verify the accuracy of this answer, others emphasize the importance of sharing the detailed calculations and methodology used to arrive at the solution. Without posting the work, it is challenging for others to confirm the correctness of the answer. Participants encourage collaboration by requesting the original calculations for review. The conversation highlights the necessity of transparency in problem-solving to ensure accuracy in fluid mechanics.
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For the problem attached, I solved it and found the answer for part b : 80.21 s

How to get sure or know if the answer is right or not.

Thanks
 

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Well, we won't know if you got the right answer if you don't post your work.
 
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Here is my work

here is my work
 

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