A cone has a base circumference of 25.12 cm and a height of 12 cm. What is its volume in cubic centimeters?
一个圆锥的底面周长是25.12厘米，高是12厘米．它的体积是多少立方厘米？
<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

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

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<result>200.96</result>