In a cylindrical bucket, put a piece of cylindrical steel with a radius of 3cm vertically into the water, the water level rises by 10cm, pull it out of the water surface by 6cm vertically, and the water level drops by 4cm. Find the volume of this piece of steel. (retain one decimal place)
在一个圆柱形水桶里，把一段半径3cm的圆柱形钢材全部垂直放入水中，水面上升10cm，把它竖着拉出水面6cm后，水面又下降4cm．求这段钢材的体积．(得数保留一位小数)
<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">3 * 3 * 3.14 * (3/2)</gadget>
<output>42.39</output>

<gadget id="calculator">42.39 * 10</gadget>
<output>423.9</output>

<result>423.9</result>