The diameter of the base of the cone is 8 cm and the height is 1.2 cm. Find its volume.
圆锥的底面直径8厘米，高1.2厘米，求它的体积．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

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

<gadget id="calculator">3.14 * 16 * 1.2 * (1/3)</gadget>
<output>20.096</output>

<result>20.096</result>