Problem about U tube

[Kdar1987]

The density of oil is 0.08 g/cm^3.

The height h of the column of oil shown is:

 

 

=======

 

Density of water is about 1g/cm^3? right?

What formula can I use here...How can I relate two densities?

[JaKiri]

Think about the U tube shown here as a set of scales for liquids. Choose a horizontal line, and if the liquids aren't moving the weight above both side must be the same. An example of a horizontal line above which the weight of the liquids must be the same:

 

[ydoaPs]

Use the pressure fluid height relationship for the oil verses the pressure fluid height relationship for the water.