A piece of iron is put into a cylindrical water tank with a bottom diameter of 6 decimeters and a height of 10 decimeters. The water level rises by 8 decimeters. Find the volume of the iron piece.
把一块铁块放入底面直径6分米，高10分米的圆柱形水缸内，水面上升了8分米，求铁块的体积．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 8</gadget>
<output>226.08</output>

<result>226.08</result>