cylindrical billet has a base radius of 2 decimeters and a height of 6 decimeters. What is the volume of this billet in cubic decimeters?
一个圆柱形钢坯，它的底面半径是2分米，高是6分米，这个钢坯的体积是多少立方分米？
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 6</gadget>
<output>75.36</output>

<result>75.36</result>