A box with a volume of 288 cubic decimeters has a bottom surface that is a square with a side length of 6 decimeters. How many square meters of cardboard should be used to make such a packing box?
一个体积是288立方分米的包装箱，它的底面是一个边长6分米的正方形．做这样一个包装箱至少要用硬纸板多少平方米？
<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<gadget id="calculator">288 / 36</gadget>
<output>8</output>

<gadget id="calculator">6 * 8</gadget>
<output>48</output>

<gadget id="calculator">36 + 48 + 48</gadget>
<output>132</output>

<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">132 * (1/50)</gadget>
<output>66/25 = around 2.64</output>

<result>66/25 = around 2.64</result>