下图是某校根据课外活动小组情况制作的扇形统计图,请根据图中提

下图是某校根据课外活动小组情况制作的扇形统计图,请根据图中提供的信息,求出每个扇形的圆心角.

 

 

 

 

 

 

 

 

 

 

 

 

 

答案

表示科技小组的扇形圆心角为90 o,表示歌咏小组的扇形圆心角为144 o,表示美术小组的扇形圆心角108 o,表示书法小组的扇形圆心角18 o

 解析:略

 

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