A cylinder has a base radius of 5 decimeters and a height of 6 decimeters, what is its lateral area?
一个圆柱的底面半径是5分米，高是6分米，它的侧面积是多少平方分米？
<gadget id="calculator">3.14 * 5 * 2 * 6</gadget>
<output>188.4</output>

<result>188.4</result>