Two rectangles with a length of 8 decimeters and a width of 4 decimeters are put together to form a square. What is the perimeter of this figure in decimeters?
两个长是8分米，宽是4分米的长方形拼成一个正方形，这个图形的周长是多少分米．
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<result>32</result>