There is a circular flower bed in the school. The diameter of the flower bed is 10 meters. Xiaogang walked around the flower bed twice. How many meters did he walk in total?
学校有一个圆形花坛，花坛的直径是10米，小刚绕花坛走了2圈，共走了多少米？
<gadget id="calculator">3.14 * 10 * 2</gadget>
<output>62.8</output>

<result>62.8</result>