作业帮The tip of a blade of an electric fan is 1.5 feet from the a
来源：学生作业帮 编辑：作业帮 分类：数学作业 时间：2024/05/04 17:09:43
The tip of a blade of an electric fan is 1.5 feet from the axis of rotation.If the fan spins at a full rate of 1760 revolutions per minute,how many miles will a point at the tip of a blade travel in an hour?(1 mile=5280 feet)
电风扇的顶部扇叶距离旋转轴1.5英尺,如果电风扇以每分钟1760最大的转速转动的话,那么电风扇顶部的扇叶在一小时内将会走过多少英里的路程.
这样就很简单了,由题可以知道这个圆的半径就是1.5英尺,那么旋转一周的路程就是2πR
这样就简单的算下：60×1760×2π×1.5/5280=_________
这个就留给你自己算了.好好加油哦
▁▂▃▄良师益友伴你行团队 ▄▃▂▁
这样就很简单了,由题可以知道这个圆的半径就是1.5英尺,那么旋转一周的路程就是2πR
这样就简单的算下：60×1760×2π×1.5/5280=_________
这个就留给你自己算了.好好加油哦
▁▂▃▄良师益友伴你行团队 ▄▃▂▁
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