Put a potato into a cylindrical water cup with a bottom diameter of 10 cm. The potato is completely covered with water, and the water level rises by 3 cm. What is the volume of this potato?
把一个马铃薯放进一个底面直径10厘米的圆柱体水杯中，马铃薯完全被水淹盖，这时水面上升了3厘米．这个马铃薯的体积是多少？
<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>