The gold medal of the 2008 Beijing Olympic Games is a "gold inlaid jade" with Chinese characteristics. It has a diameter of 7 cm and a thickness of 0.6 cm. What is its volume in cubic centimeters?
2008年北京奥运会金牌是极具中国特色的"金镶玉"，直径为7厘米，厚0.6厘米，它的体积是多少立方厘米．
<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">(7/2) ** 2</gadget>
<output>49/4 = around 12.25</output>

<gadget id="calculator">3.14 * (49/4) * 0.6</gadget>
<output>23.079</output>

<result>23.079</result>