small stone is placed in a cup with a bottom diameter of 6 cm and a height of 7 cm. The water rises to 10 cm without water overflowing. What is the volume of the stone in cubic centimeters?
一个底面直径是6厘米的水杯里，装有7厘米高的水，放入一块小石头，水面上升到10厘米，没有水溢出，这块石头的体积是多少立方厘米？
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

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

<gadget id="calculator">10 - 7</gadget>
<output>3</output>

<gadget id="calculator">3.14 * 9 * 3</gadget>
<output>84.78</output>

<result>84.78</result>