A cube box without a lid, the sides are 8 cm long. At least how many square centimeters of cardboard is needed to make this cube box.
一个无盖的正方体纸盒，棱长8厘米．做这个正方体纸盒至少需要多少平方厘米的纸板．
<gadget id="calculator">8 * 8 * 5</gadget>
<output>320</output>

<result>320</result>