Earth is approximately a sphere of radius 6.37 x 10 6 m. What are? (a) Its circumference

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Earth is approximately a sphere of radius 6.37 x 106 m. What are? 

(a) Its circumference in kilometers, 

(b) Its surface area in square kilometers, and 

(c) Its volume in cubic kilometers?

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Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

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