At least how many centimeters of iron wire are needed to make a square with a base area of 36 square centimeters and a height of 3 centimeters.
至少需要多少厘米长的铁丝，才能做成一个底面积是36平方厘米的正方形，高是3厘米的长方体框架．
<gadget id="calculator">6 + 6 + 3</gadget>
<output>15</output>

<gadget id="calculator">15 * 4</gadget>
<output>60</output>

<result>60</result>