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1、面积和周长的比较Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides fo
2、r .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET
3、3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.面积和周长的比较Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd
4、.Copyright 2004-2011 Aspose Pty Ltd.4厘米3厘米例Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.含义：周长面积 四条边的长度 和四条边所围成的 面的大
5、小计量方法 ：计量单位 ：（长+宽）2长宽长度单位面积单位Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.4厘米3厘米例算出下面长方形的周长和面积。Evaluation only.Eval
6、uation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.周长面积4 3 4 3 =14（厘米）4 2 3 2 = 14 (厘米)4厘米3厘米( 4 3 ) 2 = 14 (厘米)答:周长是14厘米。43=12（平方厘米）答：面积是12
7、平方厘米。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.做一做1、指出正方形手帕的周长和面积。Evaluation only.Evaluation only. Created with
8、Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.2、计算下面每个图形的周长和面积12厘米3厘米6厘米Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.
9、2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.3、篮球场是一个长方形，长26米， 宽14米。 它的周长是多少米？面积是多少平方米？ （ 2 6 1 4 ） 2 = 8 0（米）答：它的周长是 8 0 米。2614=364（平方米）答：它的面积是364平方米Evaluation only.Evaluation only. Created with Aspose.Sl
10、ides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.4、下图是一块长方形韭菜地。如果每平方米收韭菜4千克，一共可以收韭菜多少千克？8 米10米Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client
11、Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.（1） 一个长方形的宽是3分米，比长短2分米， 这个长方形的周长是多少分米？3 2 = 5（分米）（ 5 3 ） 2 = 1 6（分米）答：这个长方形的周长是16分米。引申练习Evaluation only.Evaluation only. Created with Aspose.Slides fo
12、r .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.（2） 一个长方形的长是15米，是宽的3倍，这个长方形的周长是多少米？ 1 5 3 = 5（米） （ 1 5 5 ） 2 = 4 0（米）答：这个长方形的周长是4 0米。Evaluation only.Evaluation only. Created with A
13、spose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.（3）一块正方形地，边长12米， 面积是多少平方米？ 如果在这块地的四周围上篱笆， 篱笆长多少？Evaluation only.Evaluation only. Created with Aspose.Slides for .NET
14、3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.(2) 用4个同样大小的长方形拼成下面两幅图。图A与图B的周长相等吗？为什么？思考题:(1) 图A与图B的周长相等吗?为什么？A BAB仔细观察，认真思考。Evaluation only.Evaluation only. Created with Aspose.Slides f
15、or .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.多做算出下表各个图形的周长和面积图形长方形正方形长方形边 长周长面积长18厘米，宽10厘米长7米，宽4米12分米56厘米180 平方厘米22米28 平方米48分米144 平方分米Evaluation only.Evaluation only. Created w
16、ith Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.再 见Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.
