The radius of the base of the cone is 2 cm and the volume is 6.28 cubic centimeters. What is the height of the cone in cm?
圆锥的底面半径是2厘米，体积是6.28立方厘米，这个圆锥的高是多少厘米．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">3 / 12.56</gadget>
<output>0.238854</output>

<gadget id="calculator">6.28 * 0.238854</gadget>
<output>1.500003</output>

<result>1.500003</result>