A cylindrical wooden box has a base radius of 2 meters and a height of 5 meters. What is its volume?
一个圆柱形木箱，底面半径是2米，高是5米．它的体积是多少？
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 5</gadget>
<output>62.8</output>

<result>62.8</result>