piece of steel can be used to make a cone with a base diameter of 6 cm and a height of 9 cm. If it is transformed into a cylindrical part with a height of 6 cm, what is the area of the bottom of the part in square centimeters?
有一段钢可做一个底面直径6厘米，高9厘米的圆锥体零件．如果把它改制成高是6厘米的圆柱体零件，零件的底面积是多少平方厘米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

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

<gadget id="calculator">(1/3) * 3.14 * 9 * 9</gadget>
<output>84.78</output>

<gadget id="calculator">84.78 / 6</gadget>
<output>14.13</output>

<result>14.13</result>