The planting area of a certain crop accounts for 30% of the total area, what is the central angle of the fan circle representing the planting area of this crop on the sector chart?
一种农作物种植面积占总面积的30%，在扇形统计图上表示这种农作物种植面积的扇形圆心角是多少°
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">360 * (3/10)</gadget>
<output>108</output>

<result>108</result>