A cylindrical container with a bottom diameter of 10 cm. An irregular stone is submerged in water. The water rises by 3 cm. What is the volume of the stone?
一个圆柱形容器，底面直径10厘米，把一块不规则的石块浸没在水中，水面上升3厘米，这个石块的体积是多少？
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25 * 3</gadget>
<output>235.5</output>

<result>235.5</result>