A cylindrical bucket with a diameter of 12 cm is filled with water, and an iron cone with a base diameter of 6 cm and a height of 36 cm is completely submerged in water. How many centimeters will the water in the bucket drop when the cone is removed from the bucket?
一个直径是12厘米的圆柱形水桶里装着水，把一个底面直径是6厘米，高36厘米的铁制圆锥体完全浸在水中．当圆锥体从桶中取出后，桶内的水将下降多少厘米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

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

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

<gadget id="calculator">36 / 113.04</gadget>
<output>0.318471</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 0.318471</gadget>
<output>2.999997</output>

<result>2.999997</result>