How large was the Warsaw Ghetto during the Nazi occupation?

The Warsaw Ghetto, which comprised the city’s old Jewish quarter, covered an area of 840 acres (340 hectares).12

During the Nazi occupation of Poland, this district was enclosed by a brick wall that stood 10 feet (3 meters) high and stretched 11 miles (18 km) in length. By the summer of 1942, the Nazis had forced nearly half a million people into this confined space, leading to extreme overcrowding where residents were often packed at a rate of nine people per room.12