At least how many centimeters of iron wire are needed to make a cuboid frame with a base perimeter of 26 centimeters and a height of 4 centimeters.
至少需要多少厘米长的铁丝，才能做成一个底面周长是26厘米，高是4厘米的长方体框架．
<gadget id="calculator">26 * 2</gadget>
<output>52</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">52 + 16</gadget>
<output>68</output>

<result>68</result>