- #1
blumfeld0
- 148
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Suppose I know city A is located at latitude 21 degrees exactly and city y is located at latitude 24 degrees exactly. I know the distance between the two cities is 400 kilometers.
I want to find the circumference of the Earth approximately
How do I do this?
My feeling is that we
subtract the two latitudes to find 24-21 = 3 degrees
so 3 degrees corresponds to roughly 400 kilometers (1)
so 180 degrees of latitude corresponds roughly to X kilometers (2)
and I find that x = 24000 kilometers
is line (1) and (2) correct or should the second line read
360 degrees of latitude corresponds roughly to X kilometers??
thanks
I want to find the circumference of the Earth approximately
How do I do this?
My feeling is that we
subtract the two latitudes to find 24-21 = 3 degrees
so 3 degrees corresponds to roughly 400 kilometers (1)
so 180 degrees of latitude corresponds roughly to X kilometers (2)
and I find that x = 24000 kilometers
is line (1) and (2) correct or should the second line read
360 degrees of latitude corresponds roughly to X kilometers??
thanks