There is a teepee with a base radius of 2 meters and a height of about 3.6 meters. What is its volume in cubic meters?
有一座圆锥形帐篷，底面积半径为2米，高约3.6米，它的体积是多少立方米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">(1/3) * 3.14 * 4 * 3.6</gadget>
<output>15.072</output>

<result>15.072</result>