A cylinder has a base radius of 5 cm and a height of 2 cm, what is its lateral area?
一个圆柱的底面半径是5厘米，高是2厘米，它的侧面积是多少？
<gadget id="calculator">3.14 * 5 * 2 * 2</gadget>
<output>62.8</output>

<result>62.8</result>