The radius of the base of the cone is 9cm, and the volume is 18.84m**3. What is the height of the cone in cm?
圆锥的底面半径是9cm，体积是18.84m**3，这个圆锥的高是多少cm．
<gadget id="calculator">9 ** 2</gadget>
<output>81</output>

<gadget id="calculator">3.14 * 81</gadget>
<output>254.34</output>

<gadget id="calculator">3 / 254.34</gadget>
<output>0.011795</output>

<gadget id="calculator">18.84 * 0.011795</gadget>
<output>0.222218</output>

<result>0.222218</result>