Calculate the extent of the mainland Antarctica in degrees and kilometers along the meridians of 0 degrees

Calculate the extent of the mainland Antarctica in degrees and kilometers along the meridians of 0 degrees and 180 degrees of longitude, using only the degree grid of the map.

Let’s mark the extreme points of Antarctica along the prime meridian, and determine the distance in degrees from the South Pole to each of these points.

The extreme points correspond to 71 S. NS. and 82 y. NS.

Then:

90 – 71 = 19.

90 – 82 = 8.

The distance in degrees from North to South will be:

190 + 80 = 27.

One degree of latitude corresponds to 111 kilometers, then the length of Antarctica is:

27 * 111 = 2997 km.

Answer: 2997 km.