The figure below shows a rope that circles the Earth. The radius of the Earth is 637163716371 kilometers. Assuming the rope makes a perfect circle, what is the length of this rope? Give your answer in terms of pi.
The length of the rope for this case is given by the length of the circumference.  We have then:  C = 2 * pi * R  Where,  R: Earth radio.  We have then:  C = 2 * pi * (6371)  C = 12742 * pi  Answer:  the length of this rope is:  C = 12742 * pi
