The circumference of the base of a cone is 18.84 cm, and the height is the same as the diameter of the base. Find the volume of the cone.
一个圆锥的底面周长是18.84厘米，高和底面直径相同，求这个圆锥的体积．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">18.84 / 3.14</gadget>
<output>6</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 6</gadget>
<output>56.52</output>

<result>56.52</result>