In a cylindrical container with a bottom diameter of 40 cm, put a conical iron block with a bottom radius of 2 decimeters and a height of 9 decimeters (completely submerged in water), when the iron block is taken out, the water level will drop how many centimeters?
一个底面直径为40厘米的圆柱体容器中，放入了一个底面半径是2分米，高9分米的圆锥体铁块，(被水完全淹没)，当铁块取出来后，水面会下降多少厘米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">40 / 10 / 2</gadget>
<output>2</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">3 / 12.56</gadget>
<output>0.238854</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 0.238854</gadget>
<output>1.000002</output>

<result>1.000002</result>