Water is being drained from a cone-shaped reservoir 10 ft. in diameter and 10 ft. deep at a constant rate of 3 ft3/min. How fast is the water level falling when the depth of the water is 6 ft?
1 Answer
Apr 14, 2015
The ratio of radius,
The volume of the cone of water is given by the formula
or, in terms of just
We are told that
When
the water depth is changing at a rate of
Expressed in terms of how fast the water level is falling, when the water depth is