如图所示,BC:6,AC=8,两个等圆外切,则图中阴影部分的面积为: A.25π/4 B.25π/8 C.25π/16 D.25π/32

作者: tihaiku 人气: - 评论: 0
问题 如图所示,BC:6,AC=8,两个等圆外切,则图中阴影部分的面积为:
选项 A.25π/4 B.25π/8 C.25π/16 D.25π/32
答案 A
解析 根据勾股定理可知AB=10,则两等圆的半径均为5,阴影部分的面积相当于圆心角为∠A﹢∠B的扇形的面积,即四分之一圆的面积,则所求为

相关内容:如图,两个,圆外,图中,阴影,部分,面积

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