Kudos to The Mac Observer's John Martellaro for dusting off his geometry and calculating the diameter of the circle that would circumscribe the Pentagon's five 921-foot sides. Answer: 1,566 feet.

But he went astray when he eyeballed the floor plans for Apple's (AAPL) proposed new headquarters -- made public last week by the Cupertino city council -- to estimate the diameter the main office building. He came up with 1,615 feet "plus or minus a few feet." That's the diameter he used to draw the image below that shows the headquarters of the U.S. Department of Defense slipping neatly inside Steve Jobs' "spaceship" with room to spare.

Good thing that is cleared up.



FYI: Steve Jobs' 'spaceship' is NOT bigger than the Pentagon - Philip Elmer-DeWitt Fortune.com, Apple 2.0: Mac news from outside the reality distortion field