A cuboid has a square bottom. After opening it along its height, the front, back, left, and right sides are also squares with a perimeter of 160 cm. Find the surface area of this cuboid.
一个长方体，底面是正方形，沿它的高把它打开后，前后左右四个面也是正方形且周长为160cm，求这个长方体的表面积．
<gadget id="calculator">160 / 4</gadget>
<output>40</output>

<gadget id="calculator">40 * 40 * 6</gadget>
<output>9_600</output>

<result>9_600</result>