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posted by  MoOzY on 11/3/2009 8:40:40 PM  |  status: Closed  |  Earned Karma: 135

13-4 help i will rate as a life saver if expained well, thanks

Course Textbook Chapter Problem Needs by
Calculus N/A N/A N/A 11/5/2009 at 10:00:00 PM
Question Details:
The radius of a right circular cone is increasing at a rate of 3 inches per second and its height is decreasing at a rate of 4 inches per second. At what rate is the volume of the cone changing when the radius is 40 inches and the height is 50 inches?

cubic inches per second

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posted by The Big Unit on 11/3/2009 9:48:46 PM  |  status: Live
Asker's Rating: Lifesaver   
Response Details:
From the given information, you know that  and . You also know that the volume of a right circular cone is . The question is asking you to find
Taking the derivative of the volume of the right circular cone using the Product Rule yields:
Plugging in all of your given information yields the final result of:
 (ANSWER)
Jon AKA THE BIG UNIT
If you have any questions about the problem, just message me and I will help you out. Hope this helps!
 
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