A copper wire is 18.84 cm long, and it forms a circle, what is the radius of this circle in cm?
一根铜丝长18.84厘米，把它围成一个圆，这个圆的半径是多少厘米？
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<result>3</result>