Xiaofang wants to use a piece of iron wire to form a square with a side length of 14 cm. What is the minimum length of the wire needed?
小芳想用一根铁丝围成一个边长14厘米的正方形，至少需要多少厘米长铁丝？
<gadget id="calculator">14 * 4</gadget>
<output>56</output>

<result>56</result>