A cylindrical bucket with a bottom diameter of 40 cm is filled with a water depth of 28 cm. A small iron block with a bottom radius of 10 cm is thrown into the water. The water level rises by 2 cm. What is the height of the cone in cm?
在一只底面直径为40厘米的圆柱形水桶内装水深28厘米，将一个底面半径为10厘米的圆锥体小铁块投入水中，水面上升2厘米，圆锥的高多少厘米？
<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<gadget id="calculator">20 ** 2</gadget>
<output>400</output>

<gadget id="calculator">3.14 * 400 * 2</gadget>
<output>2_512</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<gadget id="calculator">3 / 314</gadget>
<output>3/314 = around 0.009554</output>

<gadget id="calculator">2_512 * (3/314)</gadget>
<output>24</output>

<result>24</result>