Given that the central angle of the sector is 120° and the radius is 6cm, what is the area of the sector in cm**2.
已知扇形的圆心角为120°，半径6cm，那么扇形的面积为多少cm**2．
<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">120 * 3.14 * 36</gadget>
<output>13_564.8</output>

<gadget id="calculator">13_564.8 / 360</gadget>
<output>37.68</output>

<result>37.68</result>