If two squares with a side length of 5 cm are put together to form a rectangle, what is the perimeter of the resulting rectangle in cm?
将2个边长是5厘米的正方形拼成一个长方形，拼成的长方形的周长是多少厘米？
<gadget id="calculator">5 + 5</gadget>
<output>10</output>

<gadget id="calculator">10 + 5</gadget>
<output>15</output>

<gadget id="calculator">15 * 2</gadget>
<output>30</output>

<result>30</result>