The height of a closed cylindrical bucket is 6dm, and the diameter of the bottom surface is high (2/3). How many square decimeters of iron sheet are needed to make this oil bucket?
一个封闭的圆柱形水桶高为6dm，底面直径是高的(2/3)，做这个油桶至少需要铁皮多少平方分米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">6 * (2/3)</gadget>
<output>4</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 2</gadget>
<output>25.12</output>

<gadget id="calculator">3.14 * 4 * 6</gadget>
<output>75.36</output>

<gadget id="calculator">25.12 + 75.36</gadget>
<output>100.48</output>

<result>100.48</result>