The circumference of the bottom of a cone is 12.56cm, and the height is 9cm. What is its volume in cm**3.
一个圆锥的底面周长是12.56cm，高是9cm，它的体积是多少cm**3．
<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

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

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

<gadget id="calculator">3.14 * 4 * 9 * (1/3)</gadget>
<output>37.68</output>

<result>37.68</result>