A fish tank has a base area of 45cm2 and is filled with water to a depth of 12cm. If the height of the tank is 25cm, how much water will be needed to fill the tank to the brim?

Step-by-step explanation:

v = 45 * 12

v = 540cm³

To fill the tank,

v = 45 * 25

v = 1,125cm³

I'm not quite sure what the exact question is so i'll answer both;

1.) The volume of water required to fill the tank from empty = 1,125cm³

2.) The volume of water required to fill the tank from it's current level is

1,125cm³ - 540cm³ = 585cm³