A cuboid box without a cover, the bottom surface is a square with a side length of 4 decimeters and a height of 1 meter. How many square decimeters of cardboard are needed to make such a box?
一个无盖的长方体盒子，底面是边长4分米的正方形，高1米，做一只这样的盒子至少要多少平方分米的硬纸板．
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">4 * 1 * 10 * 4</gadget>
<output>160</output>

<gadget id="calculator">16 + 160</gadget>
<output>176</output>

<result>176</result>