A conical tank has a circular base with radius 5 ft and height 12 ft. If water is flowing out of the tank at a rate of 3 ft^3/min, how fast is the height of the water changing when the height is 7 ft?
1 Answer
Explanation:
We are given that
Assuming the cone is uniform with straight sides, then although
Volume of such a cone is
Volume of cone
differentiating
We know