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# One of the questions that came up on the exam the other day

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Manager
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One of the questions that came up on the exam the other day [#permalink]  30 Mar 2006, 20:28
One of the questions that came up on the exam the other day was a geometry/rate question. Unfortunately I don't recall the exact numbers, but was wondering if someone could explain how to approach such a question. The question said: there is a right circular cylinder (did not provide any dimensions) and said that it would take ~10 hours to fill the cylinder with water and that the height of the cylinder increased by ~0.5 meters per hour. What is the radius of the cylinder? Any ideas on how to solve such a problem?
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[#permalink]  30 Mar 2006, 20:42
did they provide the rate at which the water flows ?
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[#permalink]  30 Mar 2006, 20:48
No, it only said that it would take 10 hours to fill the cylinder. I am guessing that there is some backsolving involved in such a problem?
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[#permalink]  30 Mar 2006, 22:48
I suppose you meant increased the height of the water increased by 0.5 meter per hour and not the height of the cyinder. Is that right?
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[#permalink]  31 Mar 2006, 07:28
Quote:
I suppose you meant increased the height of the water increased by 0.5 meter per hour and not the height of the cyinder. Is that right?

Yes that's correct. Apologize for the confusion.
[#permalink] 31 Mar 2006, 07:28
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# One of the questions that came up on the exam the other day

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