The economic activity of a society consists of activities related to the production and consumption of goods and services. Since earliest times, the primary function of organized society has been economic in nature.
The Pentagon is a large office building, with about 6,500,000 sq ft (600,000 m 2), of which 3,700,000 sq ft (340,000 m 2) are used as offices. Approximately 23,000 military and civilian employees and about 3,000 non-defense support personnel work in the Pentagon. It has five sides, five floors above ground, two basement levels, and five ring corridors per floor with a total of 17.5 mi (28.2 km) of corridors.
Pentagon Construction Begins: September 11, 1941. Construction on the Pentagon began without fanfare on September 11, 1941â60 years to the day before the terrorist attacks of 2001. By early December 1941, 3,000 workers were on the site during the day, but construction was still behind schedule.