In a cylindrical bucket with a bottom diameter of 4 decimeters, put a conical plumb weight with a bottom diameter of 2 decimeters (submerged in water). At this time, the water level in the bucket rises by 2 cm. What is the height of the plumb weight?
在一个底面直径4分米的圆柱形水桶中，放入一个底面直径是2分米的圆锥形铅锤(浸没在水中)，这时桶中水面上升2厘米，铅锤的高是多少？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4 * 0.2</gadget>
<output>2.512</output>

<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

<gadget id="calculator">3 / 3.14</gadget>
<output>0.955414</output>

<gadget id="calculator">2.512 * 0.955414</gadget>
<output>2.4</output>

<result>2.4</result>