# A sodium chloride crystal in the shape of a cube is expanding at the rate of 60 cubic microns per second. How fast is the side of the cube growing when the volume is 1000 cubic microns?

##### 1 Answer

Dec 20, 2015

#### Explanation:

The sodium chloride is a cube.

Take the derivative with respect to time,

We know that:

We want to find

When the cube has a volume of