A piece of steel is completely immersed in a cylindrical bucket, and the water level rises by 10 cm. If the steel is pulled out of the water to a length of 6 cm, the water level drops by 4 cm. It is known that the radius of the bottom surface of the steel is 2 cm. Find the value of this piece of steel volume?
把一段钢材完全浸入在一个圆柱形水桶里，水面上升10厘米，如果把钢材从水里面抽出6厘米长来，则水面下降4厘米，已知钢材的底面半径为2厘米，求这段钢材的体积？
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">3.14 * 4 * (3/2) * 10</gadget>
<output>188.4</output>

<result>188.4</result>