A cuboid whose base is a square is a square whose sides are 8 cm long. What is the surface area of this cuboid?
一个底面是正方形的长方体，它的侧面展开是一个边长为8厘米的正方形，这个长方体的表面积是多少平方厘米．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">8 * (1/4)</gadget>
<output>2</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">2 * 8</gadget>
<output>16</output>

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">4 + 16 + 16</gadget>
<output>36</output>

<gadget id="calculator">36 * 2</gadget>
<output>72</output>

<result>72</result>