Question

Suppose you have two 100mL graduated cylinders. In each cylinder, there is 36.0mL of water. You also have two cubes: one is lead, and the other is aluminum. Each cube measures 3.00cm on each side. After you carefully lower each cube into the water of its own cylinder, what will the new water level be in the cylinder with the lead cube?

Answer 1

Don't be distracted by the different materials. The density of the solid is irrelevant to this.

The volume of water displaced will be the volume of the object displacing it. That is all.

Ergo: What is the volume of a cube measuring 3.00[cm] on each side?

Answer 2

volume Pb cube = 3cm x 3 cm x 3 cm = ? cc
36.0 cc water level + ? cc occupied by Pb cube = new water level.

All of that information about the second cylinder with water and the aluminum cube is superfluous information.

Answer 3

45