To draw a circle with a circumference of 18.84 cm, how many centimeters should be measured on the ruler with the two feet of the compass.
要画一个周长是18.84厘米的圆，应该用圆规的两脚在直尺上量取多少厘米的距离．
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<result>3</result>