It has not been unsealed yet. Daijiashan, Wenxin Road, Jiang 'an District is still under construction, and Hemei Community is considered as a risk area. The relevant information is now reported as follows: asymptomatic infected person 1: living atNo. Laoli, Hanzhong Street, Qiaokou District 1, and was found to be positive for nucleic acid in standardized nucleic acid screening, and immediately transferred to Jinyintan Hospital, and was judged as asymptomatic infected person according to clinical manifestations.

According to the latest bulletin issued by Wuhan Epidemic Prevention and Control Office, there are currently 1 high-risk areas and 7 medium-risk areas in Wuhan. Among them, there are four medium-risk areas in Jiang 'an District, and people in this area are not allowed to leave this area for the time being. Friends who plan to leave the province on National Day suggest asking about the epidemic prevention regulations of the destination before deciding whether to travel.

Calculate the risk area.