A cylindrical container with a bottom area of 3.14 square decimeters and a height of 3 decimeters is half filled with water. If a conical iron block with the same bottom area and a height of 12 centimeters is put into the water, how many centimeters will the water level rise? ．
在一个底面积为3.14平方分米、高为3分米的圆柱形容器中装了一半的水，把一个底面积相等、高为12厘米的圆锥形铁块放入水中，水面将上升多少厘米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12 / 10</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(1/3) * 3.14 * (6/5)</gadget>
<output>1.256</output>

<gadget id="calculator">1.256 / 3.14</gadget>
<output>0.4</output>

<gadget id="calculator">0.4 * 10</gadget>
<output>4</output>

<result>4</result>