Find the volume of a right rectangular prism with whole-number side lengths by packing it with unit cubes, and show that the volume is the same as would be found by multiplying the edge lengths, equivalently by multiplying the height by the area of the base. Represent three-fold whole-number products as volumes, e.g., to represent the associative property of multiplication.

How many times could you fill up a jet plane using the fuel that would fit in an olympic-sized pool?

How many pounds of pasta could you cook using the water in an olympic-sized pool?

How many 2 liter bottles could you fill up using the water in an olympic-sized pool?

So, if I told you a bathtub holds 640 of water, which unit would make the most sense?