How Does Water Pressure Relate to Tank Height and Pipe Elevation?

[SAT2400]

Homework Statement

1)
The water level in a large tank supplying a small town is 37m high. Water is pumped up for storage in the evenings and allowed to free-fall down as needed during the day. The street-level water pressure is...
2) How high should a vertical pipe filled with water be if a gauge at its bottom is to read a pressure of 400kPa due only to the liquid?

Homework Equations

P= pgh = F/A

The Attempt at a Solution

1)
answer: 36x 10^4 Pa
2)
answer: 3x 10^4 Pa

I have been trying to get these right answers using the equations above..
But, I have no idea..T_T
Please help!

 

[PhanthomJay]

Homework Statement

1)
The water level in a large tank supplying a small town is 37m high. Water is pumped up for storage in the evenings and allowed to free-fall down as needed during the day. The street-level water pressure is...
2) How high should a vertical pipe filled with water be if a gauge at its bottom is to read a pressure of 400kPa due only to the liquid?

Homework Equations

P= pgh = F/A

The Attempt at a Solution

1)
answer: 36x 10^4 Pa

yes

2)
answer: 3x 10^4 Pa

I don't know what you did here, but the problem is asking for the height, when the pressure is 400 kPa (40x 10^4 Pa). Use the same equation you used for the first part. (you don't need to know F or A).