A rhetorical question is a question that does not require an answer because the asker already knows the answer or is using it to make a point. Full definition
These aren't rhetorical questions... I need answers. (sbnation.com)
Her tone is conversational and she makes extensive use rhetorical questions to encourage readers to reflect on the material and to aid in the application to practice. (amazon.co.uk)
As with many rhetorical questions, the answer to this one is yes. (stemlegal.com)