25 pieces of square paper with a side length of 1 cm are put together to form a rectangle or a square. What is the shortest circumference of the assembled figure in centimeters?
25张边长1厘米的正方形纸拼成一个长方形或正方形，拼成的图形中周长最短是多少厘米．
<gadget id="calculator">5 + 5</gadget>
<output>10</output>

<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<result>20</result>