If two squares with a perimeter of 8 cm are put together to form a rectangle, what is the area of the rectangle in square centimeters?
两个周长都是8厘米的正方形，拼成一个长方形，这个长方形的面积是多少平方厘米
<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">2 + 2</gadget>
<output>4</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>