The circumference of the earth’s equator is 5,400 geographical miles; to determine what is equal to one degree of the equator?

The circumference of the earth’s equator is 5,400 geographical miles; to determine what is equal to one degree of the equator? – what is one minute of the equator (nautical mile)?

I1њ = 15 geogr. mil., I1 ‘= 1/4 geogr. miles.

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