The side length of a cube is 6 cm, how many centimeters of iron wire is needed to make the frame of this cube?
一个正方体的棱长是6厘米，做这个正方体框架至少要多少厘米的铁丝．
<gadget id="calculator">6 * 12</gadget>
<output>72</output>

<result>72</result>