The height of a cone is 12 cm and the radius of the base is 6 cm. What is its volume?
一个圆锥的高是12cm，底面半径是6cm，它的体积是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">(1/3) * 3.14 * 36</gadget>
<output>37.68</output>

<result>37.68</result>