The height of a cylinder is 30 cm and the radius of the base is 2 cm. What is the volume of the cylinder in cubic centimeters?
一个圆柱的高是30厘米，底面半径是2厘米，这个圆柱形木头的体积是多少立方厘米．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 30</gadget>
<output>376.8</output>

<result>376.8</result>