It is known that the circumference of a cone is 18.84 cm and the height is 3 cm. What is the volume of the cone in square centimeters?
已知一个圆锥体的地面周长是18.84厘米，高是3厘米，这个圆锥体的体积是多少平方厘米．
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

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

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

<gadget id="calculator">(1/3) * 3.14 * 9 * 3</gadget>
<output>28.26</output>

<result>28.26</result>