cylindrical bucket has a diameter of 4 decimeters measured from the inside and a height of 5 decimeters. Now pour some water into the bucket and completely submerge a conical iron block with a base area of 942 square centimeters and a height of 10 centimeters. If the iron block is taken out of the water, by how many centimeters will the height of the water in the container drop?
一个圆柱形水桶，从里面量底面直径为4分米，高5分米．现在往桶里注入一些水，并把一个底面积为942平方厘米，高10厘米的圆锥体铁块完全浸没．如果把铁块从水中拿出，那么容器中的水面高度将下降多少厘米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

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

<gadget id="calculator">3.14 * 400</gadget>
<output>1_256</output>

<gadget id="calculator">10 / 1_256</gadget>
<output>5/628 = around 0.007962</output>

<gadget id="calculator">(1/3) * 942 * (5/628)</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>