Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Earth's Circumference
Name: Charles
Status: Other
Age: 50s
Location: N/A
Country: N/A
Date: N/A 


Question:
How can I calculate the circumference of the Earth at >different latitudes? Example: What would the distance around the Earth be at 30 degrees latitude?
Thanks, Charles



Replies:
Charles, simple geometry. The radius from a vertical from pole to pole, to the outside of the earth at the desired latitude is what you need to figure it out. This radius is the full Earth radius times the cosine of the latitude angle. Then, the circumference at that latitude is 2 times pi times that latitude radius.

Dr. Cook



Click here to return to the Environmental and Earth Science Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory