The diameter of a circular part is 4 mm. If the plan view of this part is drawn with a scale of 6:1, what is the diameter of the plan view of this part in centimeters?
一个圆形零件的直径是4毫米，如果用6：1的比例尺画出这个零件的平面图，这个零件的平面图的直径是多少厘米？
<gadget id="calculator">0.4 * 6</gadget>
<output>2.4</output>

<result>2.4</result>