A cone has a base circumference of 25.12 meters and a height of 1.8 meters. What is the volume of the cone in cubic meters?
一个圆锥的底面周长是25.12米，高为1.8米，这个圆锥的体积是多少立方米？
<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 * 1.8 * (1/3)</gadget>
<output>30.144</output>

<result>30.144</result>