求阴影部分的面积经典题大全

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1、求阴影部分面积经典题大全1.2.3.4.5.6.7.666666668.9.10.11.12.4121086613．14.15.16.17.8426864818.19.20.21.22.23..O.O10015012686264.O2632664.8824.25.26.27.28.29.8686866641026864646468630.31.32.33.34.450646450686126.O8635.36.37.38.39.40.8610646.O.O26206861041.42.43.44.45.208610695656564612第1页85610568

2、566856685685646.47.48.49.50.3856385663685645645668566856E51.52.53.54.55.56.101074468102两个完全相同的3846410DCBAAEBD是梯形梯形直角三角形657．58.59.60.61.62.63.644446610C圆=12.56S三角形=2526664.64.65.66.67.68.69.每个圆的C=25.1246364364504506246..6270.71.72.73.74.75.4501066002045043S圆=S长方形C圆=12.5676.77.78.79.8

3、0.81.82.83.244446644484.85.86.87.88.89.90.第2页20208d=10四个等圆8444666