Xiaofang enlarges a square with a side length of 3 cm at a ratio of 2:1. What is the area of the enlarged square? how many square centimeters
小芳把一个边长3厘米的正方形按2：1的比放大，放大后正方形的面积是多少？多少平方厘米
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<result>36</result>