If the circumference of the base of a cone is 6.28 decimeters and the height is 1.2 decimeters, what is the volume in cubic decimeters?
一个圆锥的底面周长是6.28分米，高是1.2分米，体积是多少立方分米．
<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

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

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

<gadget id="calculator">(1/3) * 3.14 * 1 * 1.2</gadget>
<output>1.256</output>

<result>1.256</result>