Master Wang wants to use iron wire to make a cube frame with a side length of 5 cm. At least how many centimeters of iron wire should be used.
王师傅要用铁丝制作一个棱长为5厘米的正方体框架，至少要用多少厘米长的铁丝．
<gadget id="calculator">5 * 12</gadget>
<output>60</output>

<result>60</result>