How is Australia located in relation to the tropics of the polar circles and the prime meridian?

Part of the world Australia is located in the Southern and Eastern Hemispheres. The western end point, Cape Steep – Point, at coordinates 11309 ‘east longitude, is east of the prime meridian, at a distance
11309 ‘- 0 = 11309’ * 102.1 km = 113 * 102.1 + 102.1 / 60 ‘* 9’ = 11537 + 15 = 11552 kilometers. Where 102.1 is the measured value in kilometers of one degree of longitude at the latitude of the tropic.
South Point, South Point, at 3908 ‘S, north of the Antarctic Circle, at a distance of
6633 ‘- 2307’ = 4326 ‘* 111 km = 43 * 111 + 111/60’ * 26 ‘= 4773 + 48 = 4821 kilometers.
The southern tropic crosses the continent in the central part and is located 1380 kilometers south of the northernmost point, Cape York, which has coordinates 1041’S.