Given that the central angle of the sector is 120° and the radius is 3cm, what is the area of the sector in cm**2. (π takes 3.14)
已知扇形的圆心角是120°，半径是3cm，那么扇形的面积是多少cm**2．(π取3.14)
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">3.14 * 9</gadget>
<output>28.26</output>

<gadget id="calculator">(1/3) * 28.26</gadget>
<output>9.42</output>

<result>9.42</result>