Draw a sector with a radius of 12 cm and a central angle of 240 degrees on a drawing at a scale of 1:4. What is the area of the sector on the drawing in square centimeters?
把一个半径为12厘米，圆心角为240度的扇形按1：4的比例尺画在图纸上，图纸上扇形的面积是多少平方厘米．
<gadget id="calculator">240 / 360</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">12 / 4</gadget>
<output>3</output>

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

<gadget id="calculator">(2/3) * 3.14 * 9</gadget>
<output>18.84</output>

<result>18.84</result>