The circumference of a conical base is 12.56 meters and its volume is 12.56 cubic meters. What is its height?
一个圆锥形的底面周长是12.56米，体积是12.56立方米，它的高是多少．
<gadget id="calculator">2 ** 12.56</gadget>
<output>6_038.606714</output>

<gadget id="calculator">12.56 / 3.14 / 6_038.606714 / 3.14 / 2</gadget>
<output>0.000105</output>

<gadget id="calculator">3.14 * 0.000105</gadget>
<output>0.00033</output>

<gadget id="calculator">3 / 0.00033</gadget>
<output>9_090.909091</output>

<gadget id="calculator">0.00033 * 9_090.909091</gadget>
<output>3</output>

<result>3</result>