78838.9 square meters. Hebei University of Technology, located in Tianjin, is jointly established by Hebei Provincial People's Government, Tianjin Municipal People's Government, China Municipal People's Government and Ministry of Education, and belongs to Hebei Province. Among them, the stadium covers an area of 18763.7 square meters, three restaurants cover an area of 26,794.6 square meters, and other plots cover an area of 33,280.6 square meters. So it is18763.7+26794.6+33280.6 = 78838.9 square meters.