·      The diameter of the earth is 12734 kilometres (8000 miles)

·      The circumference of the earth is 40000 kilometres (25OOO miles)

·      Los Angeles to New York 4000 kilometres (2462 miles)

·      Melbourne – Perth – Broome 6150 kilometres (3843 miles)

·      Melbourne – Perth 3800 kilometres (2375 miles)

·      Perth to Broome 2340 kilometres (1485 miles)