cuboid iron box with a square base, if you unfold its sides, you will get exactly a square with a side length of 8 cm. What is the surface area of this cuboid.
一只底面是正方形的长方体铁箱，如果把它的侧面展开，正好得到一个边长是8厘米的正方形．则这个长方体的表面积是多少．
<gadget id="calculator">8 / 4</gadget>
<output>2</output>

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

<gadget id="calculator">8 * 2 * 4</gadget>
<output>64</output>

<gadget id="calculator">8 + 64</gadget>
<output>72</output>

<result>72</result>