Question 682846
Circumference (C)=Pi*Diameter(D) or C=PI*D

Circumference of earth in meters (distance feet traveled) is:
C=Pi*D--------------formula 1
Circumference defined by head in meters (distance head traveled) is:
Ch=PI*(D+2)=PiD+2*Pi----formula 2
Subtract formula 1 from formula 2 to see how much farther the head traveled compared to the feet

Ch-C=2Pi meters~~~~~6.28 meters---answer

Hope this helps---ptaylor