There is a circular flower bed with a radius of 3 meters in the garden and a height of 0.5 meters. What is the outer area of this flower bed in square meters?
花园里有一个半径为3米的圆形花坛，高0.5米，这个花坛的外侧面积是多少平方米？
<gadget id="calculator">2 * 3.14 * 3 * 0.5</gadget>
<output>9.42</output>

<result>9.42</result>