The circumference of the base of a cone is 18.84 decimeters, the height is 12 decimeters, what is the volume?
一个圆锥的底面周长是18.84分米，高是12分米，体积是多少？
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

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

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

<gadget id="calculator">3.14 * 9 * 12 * (1/3)</gadget>
<output>113.04</output>

<result>113.04</result>