If a square with a side length of 6 cm is cut into two rectangles, the sum of the perimeters of the two rectangles is greater than the perimeter of the square by how many centimeters.
把一个边长是6厘米的正方形剪成两个长方形，这两个长方形的周长之和比正方形的周长要长多少厘米．
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<result>12</result>