The side area of a cylindrical bucket is 6 times the bottom area, and the diameter of the bucket is 4 decimeters, what is its volume in cubic decimeters?
一个圆柱形水桶的侧面积是底面积的6倍，水桶的直径是4分米，它的容积是多少立方分米．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">6 / 12.56</gadget>
<output>0.477707</output>

<gadget id="calculator">3.14 * 4 * 3.14 * 4 * 0.477707</gadget>
<output>75.359999</output>

<result>75.359999</result>