Question

Какое кругосветное путешествие будет короче: по параллели 30 градусов или по параллели 60 градусов?

Answer 1

Будет короче по параллели 60 градусов.

Answer 2

Comparing Circumnavigation Distances

When comparing the distances for a circumnavigation journey along the 30th and 60th parallels, it's important to consider the circumference of the Earth at these latitudes. The distance around the Earth at a particular latitude can be calculated using the formula:

Distance = Circumference of the Earth * cos(latitude)

Using this formula, we can compare the distances for the two parallels.

Circumnavigation Distance at 30 Degrees Latitude

The circumference of the Earth at the 30th parallel is approximately 40,075 kilometers. Therefore, the distance for a circumnavigation journey at this latitude would be:

Distance = 40,075 km * cos(30°)

Circumnavigation Distance at 60 Degrees Latitude

Similarly, the circumference of the Earth at the 60th parallel is approximately 20,036 kilometers. Therefore, the distance for a circumnavigation journey at this latitude would be:

Distance = 20,036 km * cos(60°)

Conclusion

Comparing the two distances, it can be concluded that the circumnavigation journey along the 30th parallel would be shorter than the journey along the 60th parallel.