A cylindrical wooden stick with a length of 12cm and a cross-sectional diameter of 4cm is cut into three sections on average, and then all of them are painted with color. What is the area of the painted part?
一根长12cm，横截面直径是4cm的圆柱形木棍，将它平均截成三段，然后全部涂上颜色，涂色部分的面积是多少？
<gadget id="calculator">3.14 * 4 * 12</gadget>
<output>150.72</output>

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

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

<gadget id="calculator">3.14 * 4 * 6</gadget>
<output>75.36</output>

<gadget id="calculator">150.72 + 75.36</gadget>
<output>226.08</output>

<result>226.08</result>