Answer:
The gauge pressure is

Step-by-step explanation:
From the question we are told that
The height of the water contained is

The height of liquid in the cylinder is

At the bottom of the cylinder the gauge pressure is mathematically represented as

Where
is the pressure of water which is mathematically represented as

Now
is the density of water with a constant values of

substituting values


While
is the pressure of oil which is mathematically represented as

Where
is the density of oil with a constant value

substituting values


Therefore

