Why was the evacuation necessary after the Chernobyl disaster?

The evacuation after the Chernobyl disaster was necessary to protect public health and safety due to the release of a significant amount of radioactive materials into the environment. The explosion at the nuclear power plant exposed nearby residents to harmful levels of radiation, which posed immediate and long-term health risks, including increased cancer rates. Evacuating the surrounding areas, particularly the city of Pripyat, was crucial to prevent further exposure and to facilitate cleanup and containment efforts. Ultimately, the evacuation aimed to minimize the impact of the disaster on human lives and the environment.