长方体正方体的表面积和体积PPT最经典版doc资料.ppt

,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,长方体和正方体的体积,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,什么叫物体的体积？,常用的体积单位有哪些？,复习,物体所占空间的大小叫物体的体积。,有立方厘米、立方分米、立方米,cm,3,、,dm,3,、,m,3,。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,长方体的体积长,宽,高,V,abh,h,a,b,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,正方体的体积棱长,棱长,棱长,V,a,3,a,a,a,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,5cm,4cm,10cm,8dm,=88 8,=512(dm ),3,V=a,3,V=abh,3,=5 4 10,=200,（,cm,）,计算体积,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,你还能用其他的方法来计算出它们的体积吗？,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,你们知道什么是底面吗？（讨论）,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,长,宽,底 面,棱长,棱长,底 面,长方体或正方体底面的面积叫做,底面积,.,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,长方体的底面积,=,正方体的底面积,=,长,x,宽,棱长,x,棱长,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,求下列图形的底面积。,(,单位：分米,),Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,你能想到用其他的方法来计算开始的长方体和正方体吗？,4cm,10cm,8dm,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,长方体的体积,=,长,宽,高,底面积,正方体的体积,=,棱长,棱长,棱长,底面积,长方体（或正方体）的体积,=,底面积,高,V=S h,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,v=Sh,=0.06 5,=0.3(,m,3,),一根长方体木料，长,5m,，横截面的面积是,0.06m,2,。这根木料的体积是多少？,0.06m,2,答：这根木料的体积是,0.3,m,3,。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,一个长方体的下底面积是,12,平方厘米的长方形，它的高是,5,厘米，体积是多少立方厘米？,V=,S,h,=125,=60(,cm,3,),答：体积是,60,立方厘米。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,一块正方体的木板，这块木板的厚度是,8,分米，底面积是,6,平方分米。体积是多少？,86=48,（立方分米）,答：体积是,48,立方分米。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,一个长方体水箱体积是,320,立方分米，这个水箱的底面是一个边长为,8,分米的正方形，水箱的高是多少分米？,320,8=40,（分米）,答：水箱的高是,40,分米。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,计算体积。,（,1,）一个长方体，长,20,厘米，宽,12,厘米，高,5,厘米。,（,2,）一个正方体，棱长是,6,分米。,（,3,）一个长方体，底面积是,60,厘米,2,，高,7,厘米。,（,4,）一个长方体，底面是边长为,2,分米的正方形，高,5,分米。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,