if your bottle is a cylinder, or can be reasonably approximated by a cylinder, then its volume is \(\displaystyle \pi r^2h\) With r and h given in ml, the volume will be in cubic ml. There are 10 mm in a cm so 10(10)(10)= 1000 cubic mm in a cm so the volume, again if r and h are given in mm. then the volume is \(\displaystyle \frac{\pi r^2 h}{1000}\) cubic cm. And, as skeeter said, one ml is exactly one cubic cm.