There is a cuboid, the base is square, the height is twice the side length of the base, and the sum of the sides of this cuboid is 64 cm. What is the area of the base of this cuboid? ．
有一个长方体，底面是正方形，高是底面边长的2倍，这个长方体的棱长总和是64厘米．这个长方体的底面面积是多少平方厘米？．
<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">8 + 8</gadget>
<output>16</output>

<gadget id="calculator">64 / 16</gadget>
<output>4</output>

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

<result>16</result>