cylindrical tin bucket, (without a cover), is 16 decimeters high and has a bottom radius of 10 decimeters. How many square decimeters of tin is needed to make this bucket?
一个圆柱形铁皮水桶，(无盖)，高16分米，底面半径10分米，做这个水桶需要多少平方分米的铁皮？
<gadget id="calculator">2 * 3.14 * 10 * 16</gadget>
<output>1_004.8</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<gadget id="calculator">1_004.8 + 314</gadget>
<output>1_318.8</output>

<result>1_318.8</result>