What is the volume of a cylinder with a radius of 6 decimeters and a height of 2 decimeters?
一个圆柱半径是6分米，高是2分米，它的体积是多少．
<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36 * 2</gadget>
<output>226.08</output>

<result>226.08</result>