The areas of the two squares differ by 9 square centimeters and the side lengths differ by 1 centimeter. What is the sum of the areas of the two squares in square centimeters?
两个正方形的面积相差9平方厘米，而边长相差1厘米．那么这两个正方形的面积之和多少平方厘米．
<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">25 + 16</gadget>
<output>41</output>

<result>41</result>