The circumference of the base of a cone is 25.12dm, and the height is 3 times the radius of the base. What is the volume of the cone?
一个圆锥的底面周长是25.12dm，高是底面半径的3倍，这个圆锥的体积是多少？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">(1/3) * 3.14 * 16 * 12</gadget>
<output>200.96</output>

<result>200.96</result>