An equilateral triangular flower pond with a side length of 28 meters. A path around the pond is built along the flower pond. What is the minimum length of this path?
一个等边三角形的花池，边长28米，沿花池修建一条绕池小道，这条小道最少长多少米？
<gadget id="calculator">28 * 3</gadget>
<output>84</output>

<result>84</result>