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OpenStudy (anonymous):

*Updated info* Planetary circumference question...

OpenStudy (anonymous):

If the circumference of the earth around the equator is approximately 40,075km, and the latitude of Perth, Australia, is 31° 57'S (3508.47km from the equator, along the surface of the Earth), what is the distance "around the Earth" at this point? Assume the Earth is spherical. Thanks!

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