A cuboid tin bucket without a cover, the bottom is a square with side length 4dm, and the height is 1m. How much iron sheet is needed to make such a bucket at least?
一种无盖的长方体铁皮水桶，底面是边长4dm的正方形，高1m．做这样的水桶至少要用多少铁皮？
<gadget id="calculator">4 * 1 * 10 * 4</gadget>
<output>160</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

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

<result>176</result>