3 small squares with a side length of 1 cm are assembled, what is the perimeter of the assembled figure in cm
3个边长为1厘米的小正方形拼成，拼成图形的周长是多少厘米
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>