The diameter and height of the base of a cylinder are both 6 cm, what is its volume in cm**3.
一个圆柱的底面直径和高都是6cm，它的体积是多少cm**3．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 6</gadget>
<output>169.56</output>

<result>169.56</result>