Question

Just to check some questions
I have a cylindrical tank. With a base area =A and a height=h and a density=r

A. Find an expression of the volume:
pi*(radius)(radius)*h=pi*(a/pi)*h

Answer 1

Is that ok?

Answer 2

Yes, but it's redundant. You have base area, A, so just take the base area times the height to get volume (your equation simplifies to this):\[V=A*h\]

Answer 3

Ok, thanks

Answer 4

How could I find an expressio for weight?

Answer 5

Weight is equal to mass times gravity, right?

Answer 6

Yes, that's right.

Answer 7

and mass is equal to density times volume

Answer 8

Yep, again.

Answer 9

So W=density*A*h*g ?

Answer 10

Yes.

Answer 11

And pressure would be weight/A? So the areas would cancel

Answer 12

Pressure of what?

Answer 13

Pressure made by the liquid on the bottom of the tank

Answer 14

OK, so the cylindrical tank is completely filled with water of density r?

Answer 15

P=f/a

Answer 16

filled to heigh h

Answer 17

but I already got the weight of this liquid

Answer 18

Ah. OK, yeah. P=F/A

Answer 19

perfect :) thanks