Two squares with a side length of 10 cm are put together to form a rectangle. What is the perimeter of the rectangle in cm?
两个边长10厘米的正方形拼成一个长方形，这个长方形的周长是多少厘米？
<gadget id="calculator">10 * 6</gadget>
<output>60</output>

<result>60</result>