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A wheel with radius 2 cm is being pushed up a ramp at a rate of 6 cm per second. The ramp is 520 cm long, and 260 cm tall at the end. A point P is marked on the circle. How far does the wheel travel in one rotation?

  • Math -

    Discard the noise -- all we care about is the circumference of the wheel.

    C = 2pi r = 4pi cm

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