Geom ToF - Part 3

Geometry Level 2

True or False

If Earth's equator is a distance of 2 π R 2 \pi R , then the distance between the north and south pole is 2 R 2 R .

Note: The earth is not a perfect sphere.

Image credit: Wikipedia
False, it is larger than 2 R 2R False, it is smaller than 2 R 2 R True

Chung Kevin by Chung Kevin , 45, Australia

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2 solutions

Vaibhav Prasad
Jul 10, 2015

The Earth is not a perfect sphere. If it were, the poles wold be 2 R 2R distance apart. Instead, it is bulged at equator. Thus the distance between the poles is slightly less than 2 R 2R .

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I think that earth is bulged at the equator.

Archit Boobna - 5 years, 11 months ago

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oh yes. thank you

Vaibhav Prasad - 5 years, 11 months ago

m not understand

sourabh jain - 5 years, 11 months ago
Swapnil Maiti
Sep 23, 2015

It is said that earth is a geoid , bulging at the centre and flat at the poles. It forms an oval. So, the distance between the poles is less than 2R.

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