Suppose a liquid is to be cleared of sediment by pouring it through a cone-shaped filter. Assume that the height of the cone is 16 in. and the radius at the base of the cone is 4in. If the liquid is flowing out of the cone at a rate of 2in3/min when the level is 8in. deep, how fast is the depth of the liquid decreasing at that instant

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter12: Quadratic Functions
Section12.6: Solving Problems Involving Quadratic Equations
Problem 1.3E
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Suppose a liquid is to be cleared of sediment by pouring it through a cone-shaped filter. Assume that the height of the cone is
16 in. and the radius at the base of the cone is 4in. If the liquid is flowing out of the cone at a rate of 2in3/min when the level is
8in. deep, how fast is the depth of the liquid decreasing at that instant?

 

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