求图形阴影部分面积,是中考试题的重要内容之一.这些题目除了着重考查基础知识之外,还十分重视对数学方法的考查,对数学思想的理解和应用,提高学生分析问题、解决问题的能力.现以2013年中考试题为例,就各类解法加以归类说明.一、利用圈形的面积公式例1(如图,Rt△ABC的顶点B在反比例函数y=(12)/x的图象 It is one of the most important contents of the middle school entrance examination questions to seek the area of ​​the shaded part of the exams.In addition to focusing on examining the basic knowledge, these topics attach great importance to the examination of mathematical methods, the understanding and application of mathematical ideas, and the improvement of students’ analytical and problem solving Ability. Now take the middle school exam questions in 2013 as an example to classify the various solutions .A first, using the area formula of a circle example 1 (Figure, Rt △ ABC vertex B in the inverse function y = (12) / x Image