692287002 Posted November 7, 2008 Report Share Posted November 7, 2008 Hey I love math and find helping people helps me Please post you questions i would live to help Reply Link to post Share on other sites More sharing options...
SharkSpider Posted November 8, 2008 Report Share Posted November 8, 2008 Well, the one question that I haven't been able to get right, even after spending some time at it. For the record, IB would most likely never ask anything this evil, but if you have a method of getting a solution, please post some hints at it, since it's been bugging some of us for a while now. "A container in the shape of an inverted cone has height 16 cm and radius 5 cm at the top. It is partially filled with a liquid that oozes through the sides at a rate proportional to the area of the container that is in contact with the liquid. (The surface area of a cone is pi*r*l, where r is the radius and l is the slant height) If we pour the liquid into the container at a rate of 2 cm^3/min, then the height of the liquid decreases at a rate of 0.3 com/min when the height is 10 com. If our goal is to keep the liquid at a constant height of 10 cm, at what rate should we pour water in to the container?" Reply Link to post Share on other sites More sharing options...
692287002 Posted November 17, 2008 Author Report Share Posted November 17, 2008 [quote name='SharkSpider' post='27985' date='Nov 8 2008, 08:12 AM']"A container in the shape of an inverted cone has height 16 cm and radius 5 cm at the top. It is partially filled with a liquid that oozes through the sides at a rate proportional to the area of the container that is in contact with the liquid. (The surface area of a cone is pi*r*l, where r is the radius and l is the slant height) If we pour the liquid into the container at a rate of 2 cm^3/min, then the height of the liquid decreases at a rate of 0.3 com/min when the height is 10 com. If our goal is to keep the liquid at a constant height of 10 cm, at what rate should we pour water in to the container?"[/quote] Sorry for not replying...i will find out from my math teacher..they are the best Reply Link to post Share on other sites More sharing options...
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