A rectangle is made up of two squares of equal size. The side length of the square is 4 cm. What is the area of the rectangle?
一个长方形是由两个大小相等的正方形拼成的正方形的边长是4厘米求这个长方形的面积是多少？
<gadget id="calculator">4 * 4 * 2</gadget>
<output>32</output>

<result>32</result>