i think you cannot compare length and volume by just looking at their values they two different dimensions. So it's possible to have a situation that you've mentioned
if you really want to compare,
take for example
if it was a volume, it can be taken as x x x (length= m, width= m, height= m)
so comparing this with your final answer it should obviously less than this one.
but of course since it's not a volume you can't compare a length with a volume..