Question

Water is flowing at a rate of 50 cubic meters per minute from a concrete conical reservoir. The radius of the reservoir is 45 m and the height is 6 m. How fast is the radius of the water's surface changing when the water is 5 meters deep?

Answer 1

@SithsAndGiggles

Answer 2

Do I use the volume formula?

Answer 3

Looks to me like another similar triangles problem.

Answer 4

h is constant, correct h=5 so I am looking for dr/dt

Answer 5

\[\frac{ h }{ r }=\frac{ 6 }{ 45 }\]