# Dripping Cones

Geometry Level 3

There are two identical right circular cones each of height $$2\text{ cm}.$$ They are placed vertically, with their apex pointing downwards, and one cone is vertically above the other. At the start, the upper cone is full of water and the lower cone is empty.

Water drips down through a hole in the apex of the upper cone into the lower cone. When the height of water in the upper cone is $$1\text{ cm},$$ what is the height of water in the lower cone (in $$\text{cm}$$)?

×