Put a piece of cylindrical steel vertically into a cylindrical bucket. If the steel is 10 cm above the water surface, the water level will rise by 6 cm; if the steel is completely immersed in the water, the water level will rise by another 2 cm. The radius of the base of the steel is 5 cm. What is the volume of this piece of steel in cubic centimeters?
把一段圆柱形的钢材垂直放入一个圆柱形的水桶中，如果钢材露出水面10厘米，则水面上升6厘米；如果再把钢材全部浸入水中，那么水面又上升2厘米．钢材的底面半径是5厘米．这段钢材的体积是多少立方厘米．
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">6 + 2</gadget>
<output>8</output>

<gadget id="calculator">3.14 * 5 * 5 * 5 * 8</gadget>
<output>3_140</output>

<result>3_140</result>