Finding added weight from specific weight and tank volume

[dfcitykid]

So I have a problem/question were tanks are filled with water and its specific weight is 9.45 kN/m^3. They also give you a range of volumes of different tanks. The problem then asks for the added weight (kN) due to the liquid for the given range of the different tank sizes (diameter). My question is how do you get the added weight; do I just add the different volumes to the specific weight. Thanks for the help.

 

[Matternot]

You probably want to re-upload this in the homework help section where you can formally explain your attempt at a solution etc. You'd be far more likely to receive help