Determine the distance in degrees and kilometers of South America at the 20th parallel of the south latitude.

We find a point along the meridian and along the parallel (north and south, west and east)
1. Along 70 ° – northern point 12 ° N, southern point – 55 ° S, eastern point 35 ° W, western – 78 ° W.
2. Distance along the meridian – 12 ° + 55 ° = 67 °. Parallel 78 ° -35 ° = 43 °
3. Distance in kilometers along the meridian: at 1 degree – approximately 111 km. Coming out of this: 67 ° * 111 = 7437 km
4. We find out the length of 1 °, sos latitude X 111 = 109.3 km. We consider:
43 ° * 109.3 = 4699.9 km.