A cylindrical wooden stick with a length of 12dm and a cross-sectional diameter of 4cm is cut into two sections on average, and then the whole part is painted with color. What is the area of the painted part?
一根长12dm，横截面直径是4cm的圆柱形木棍，将它平均截成两段，然后全部涂上颜色，涂色部分的面积是多少？
<gadget id="calculator">12 * 10</gadget>
<output>120</output>

<gadget id="calculator">3.14 * 4 * 120</gadget>
<output>1_507.2</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 * 4</gadget>
<output>50.24</output>

<gadget id="calculator">1_507.2 + 50.24</gadget>
<output>1_557.44</output>

<result>1_557.44</result>