What Is the Value of g in the Pressure Calculation Formula?

[Bk8907]

Homework Statement

Cylindrical tank of water is 20m tall, and full. atmospheric pressure is 1.01x10^5 Pa and the density of water is 1000Kg/m^3. Find absolute pressure 6m above the bottom.

Homework Equations

P=P*sub*a + pgh

The Attempt at a Solution

I got so far... P=(1.01 x 10^5) + (1000)g(6)
How do i find g?what is g??

 

[greenfloss]

Isn't g gravity? Which is a given constant most of the time.

 

[xiankai]

P=(1.01 x 10^5) + (1000)g(6)

u're finding the pressure exerted by 6m of water?

 

[HallsofIvy]

u're finding the pressure exerted by 6m of water?

Good point. The water tank is 20 m high and the gauge is 6 m above the base so how many meters below the water line is it?