The difference in side length between two large and small squares is 3 cm, and the difference in area is 39 cm2. Find the area of the larger square.
大小两个正方形边长差3厘米，面积差39平方厘米，求大正方形的面积．
<gadget id="calculator">9 + 39</gadget>
<output>48</output>

<gadget id="calculator">48 / 6</gadget>
<output>8</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<result>64</result>