$$Assume that at temperature T $=-20$C the ethanol and the bulb have the same volume V$=150$ mm$3($that is$,$ the ethanol perfectly fits into the bulb and l $=0).$ Solve for the volume of the ethanol and for the volume of the glass bulb when they are both at temperature T $=0$C$.$ Write a solution defining your variables, explaining any equations you use, and showing units in your work. You may find it helpful to recall that a hole in a material will experience the same amount of volume expansion as the material itself.