Cut a cylinder into the largest cone, the cut volume is 12.56 cubic meters, the circumference of the base of the cylinder is known to be 6.28 meters, find the height of the cylinder.
把一个圆柱体削成最大的圆锥体，削去的体积是12.56立方米，已知圆柱的底面周长是6.28米，求圆柱的高．
<gadget id="calculator">12.56 / 2</gadget>
<output>6.28</output>

<gadget id="calculator">6.28 * 3</gadget>
<output>18.84</output>

<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

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

<result>6</result>