A conical salt spreader is spreading salt at a rate of 1 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.

Question

anonymous · Answer

Do you know the formula to apply?

anonymous · Answer

yes i just dont know what to do when i get this.... dh/dt= -1 x 25/4(pi)(h^2) ... what do i plug into h??

anonymous · Answer

???