Yes, if the question has been closed without improvements and stayed closed for a significant time (SE uses 9 days as a measure). Either the question is appropriate or it isn't. But saying it's inappropriate for the site yet its answers should be conserved somehow is rather odd. If that's what you say, you obviously think the question does have merit and maybe shouldn't have close-voted it.
Those questions are basically broken windows encouraging people to smash in more windows. Deleting the questions that have been deemed inappropriate by the community through close-voting is an effort to repair those windowseffort to repair those windows in lack of another repair in the form of improving the question into appropriateness.
The reason the automatic task doesn't delete closed questions with positively-voted answers is just for the fact that it's entirely automatic and silent, so it has checks in place to make sure no possible valuable and salvagable content is accidentally removed. That's why those that fell through the cracks of this automatic process have to be removed in a manual maintenance effort.
(I would rather ask why you answered a question that you yourself thought shouldn't be answered.)