发布时间 ： 2019-04-29 14:20:25 UTC
类别 ： Daily
Page Views: 40 views
Enter the value and click Calculate. The result will be displayed.
Input data:
Outer diameter of the wheel: 45 inches
Axle: 20 rpm
Click "Calculate" to output data Speed: 4.83 kilometers per hour
Speed: 3 miles per hour