No. 1 Squadron needs to wrap a cube box with a side length of 3.2dm in red paper to make it a waste battery recycling box (without a cover). How many square decimeters of red paper should they prepare?
五1中队要把一个棱长3.2dm的正方体纸盒外面用红纸包起来，使其成为废旧电池回收箱(无盖)．他们应该准备多少平方分米的红纸？
<gadget id="calculator">3.2 * 3.2 * 5</gadget>
<output>51.2</output>

<result>51.2</result>