What is the area of a square enclosed by a wire 12 cm long?
用一根长12厘米的铁丝围成的正方形面积是多少平方厘米
<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<result>9</result>