A conical salt spreader is spreading salt at a rate of 2 cubic feet per minute. The diameter of
the base of the cone is 4 feet and the height of the cone is 5 feet. How fast is the height of the salt in the spreader
decreasing when the height of the salt in the spreader (measured from the vertex of the cone upward) is 3 feet?
Give your answer in feet per minute. (It will be a positive number since we use the word “decreasing”.)

Question

A conical salt spreader is spreading salt at a rate of 2 cubic feet per minute. The diameter of
the base of the cone is 4 feet and the height of the cone is 5 feet. How fast is the height of the salt in the spreader
decreasing when the height of the salt in the spreader (measured from the vertex of the cone upward) is 3 feet?
Give your answer in feet per minute. (It will be a positive number since we use the word “decreasing”.)

anonymous · Answer

@AccessDenied 
@ash2326 
@Chlorophyll 
@jagatuba 
@jhonyy9 
@phi 
@TuringTest 
@Mertsj

turingtest · Answer

always draw the pic...

turingtest · Answer

|dw:1333043238193:dw|the radius of the whole cone is 2 and the height is 5

turingtest · Answer

|dw:1333043327825:dw|at some given moment the cone of remaining salt is radius r and height h
from this we can find similar triangles....