If the radius of the base of a cone is 2 cm and the height is 3 cm, what is the volume in cubic decimeters?
一个圆锥体的底面半径是2厘米，高是3厘米，则容积是多少立方分米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3 / 1_000</gadget>
<output>3/1_000 = around 0.003</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * (3/1_000)</gadget>
<output>0.01256</output>

<result>0.01256</result>