Given that the area of a 60° sector is 3㎡, what is the area of the circle it is in?
已知60°扇形面积为3㎡，它所在的圆的面积是多少㎡．
<gadget id="calculator">60 / 360</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">3 / (1/6)</gadget>
<output>18</output>

<result>18</result>