A cylinder has a base radius of 6 cm and a height of 2 decimeters, find the volume of the cylinder.
一个圆柱的底面半径是6厘米，高是2分米，求这个圆柱的体积．
<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">3.14 * 36 * 20</gadget>
<output>2_260.8</output>

<result>2_260.8</result>