# Determine the extent of Eurasia in degrees and kilometers

a) from north to south.
To find out the extent of Eurasia from north to south, it is necessary to determine the latitude of the extreme northern and southern points of the mainland. The latitude of Cape Chelyuskin is 78 ° north latitude. Cape Piai latitude – 1 ° north latitude.
Find the distance in degrees between the points.
78 ° – 1 ° = 77 °.
Since the length of the 1 ° meridian is 111.3 km, then 77 ° * 111.3 = 8126 km

b) from west to east.
To find out the length of Eurasia from west to east, it is necessary to determine the longitude of the extreme western and eastern points of the mainland. The longitude of Cape Roca is 9 ° west longitude. Longitude of Cape Dezhnev – 170 ° west longitude.
Find the distance in degrees between the points.
9 ° + 180 ° + (180 ° – 170 °) = 199 °.
Since 1 ° along the 40th parallel is 85.4 km, 199 * 85.4 = 16 996 km.

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