math
posted by deb .
if the unicycle with the largest wheel of 185 cm is ridden 1 km how many complete rotations will the wheel make

Let N be the number of rotations.
Each rotation advances the tire and the unicycle 2*pi*R
The distance traveled and the radius must use the same dimensions when using the formula.
N*2*pi*R = 1000 (meters)
R = 1.85 meters
N = (1000/1.85)*[1/(2pi)] = 86