According to foreign media reports, the world's largest lollipop has appeared in San Francisco, USA. The lollipop is in the shape of a cuboid, with the upper and lower sides being square. The candy body is as high as 1.8m and the width is about 0.9m. What is the sum of the lengths of the lollipop's sides?
据外媒报道，世界上最大的棒棒糖曾亮相美国旧金山，该棒棒糖呈长方体，上下两个面为正方形，糖体高达1.8m，宽度约为0.9m．这个棒棒糖的棱长总和是多少米？
<gadget id="calculator">0.9 + 0.9 + 1.8</gadget>
<output>3.6</output>

<gadget id="calculator">3.6 * 4</gadget>
<output>14.4</output>

<result>14.4</result>