A cylindrical glass with a bottom diameter of 10 cm and a water depth of 18.4 cm in the glass. When a conical iron block with a bottom diameter of 6 cm is placed in the glass, the water depth in the glass is 19 cm. What is the height of this conical iron block?
一个圆柱形玻璃杯，底面直径为10cm，杯中水深18.4cm，当放入一个底面直径为6cm的圆锥铁块后，杯中水深19cm．这个圆锥形铁块的高是多少厘米？
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">19 - 18.4</gadget>
<output>0.6</output>

<gadget id="calculator">3.14 * 25 * 0.6</gadget>
<output>47.1</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9</gadget>
<output>28.26</output>

<gadget id="calculator">3 / 28.26</gadget>
<output>0.106157</output>

<gadget id="calculator">47.1 * 0.106157</gadget>
<output>4.999995</output>

<result>4.999995</result>