《人教版九年级数学上册:24.4+弧长和扇形面积(含答案)39130.pdf》由会员分享,可在线阅读,更多相关《人教版九年级数学上册:24.4+弧长和扇形面积(含答案)39130.pdf(2页珍藏版)》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
24.4 1.R1n2.RS=1n3.R,1S=.6.2013?1ABCDABCDxxAxA 4 4 n6()3 A.40 B.45C.602.2013?ABCDBD=4cm,ABC0180()A.4 n cm B.3 n cmC.2 n cm D.n cmD 1.2013?3.D.80(2013?,O AO BABCAAC=2A.4 C.B.D.4.(2(2013?)19930A.-7:B.1-HC.2 485.2013?60ABCA45AB C BBB()31BAC60,AC=1JI JTA-B.C-D.23 4 BC5D-xA.C.1 D1+7.2013?AOB1AOB90AB()A.1TLB 4 C.1D 2 1 2 1 1 K+4 2 7&(2013?ADORtABC ABACEBE BEn 3()A.JI B.9 9C.3,33-D.3 2 22 2 3 89.2013?AOBN0=120,OA=3AB10.2013?ABC51 ABCB ABCA C(n.140.111.2013?15mm1011