Question
The radius of Earth is $6378 .$ km. What is its circumference to three significant figures?
Step 1
The formula for the circumference of a circle is given by: \[C = 2\pi r\] where \(C\) is the circumference, \(\pi\) is a constant approximately equal to 3.14159, and \(r\) is the radius of the circle. Show more…
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