Verified Answer :

lukeholloway15

The formula for circumference is: (3.14)(r^2)
Radius is 13
13 x 13= 169
169 x 3.14= 530.66
Bike travels 530.66 inches per rotation of the wheel.

strawberrypie32

81.60 because you multiply the diameter by pi

26*pi = 81.68

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