1. cube volumes

hi its been a while since i have had any thing harder than plain old adding up to , so wonder if somebody could point me in the right direction
if i Have an aero bar with 0.04mm square and .1mm deep with 16 bubbles in each square , how do i calculate how many bubbles in 1mm cube

i did it my way and it made sense to me , then the kids came home and really confused me with different solutions , making me feel really thick , so if anyone knows the right way please enlighten me

2. Hello, stupidandold!

The wording is vague . . . can you clarify?

I have an aero bar with 0.04mm square and .1mm deep
with 16 bubbles in each square, .
. . . each square WHAT?
how do i calculate how many bubbles in a 1mm cube?

We have a bar which is: $0.04 \text{ mm } \times 0.04 \text{ mm }
\times 0.1 \text{ mm}$

. . so we are dealing with volume, not squares.

If you mean 16 bubbles per bar, we can work out the answer.

There are 16 bubbles in: $(0.04)(0.04)(0.1) \:=\:0.00016$ mm³.

A 1-mm cube has a volume of 1 mm³.

So we have: . $\frac{1\text{ mm}^3}{1} \times \frac{16\text{ bubbles}}{0.00016\text{ mm}^3} \;=\;100,\!000\text{ bubbles}$