六年级数学圆柱表面积练习题ppt讲课教案.ppt

Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.计算下现各圆柱的表面积。（单位：厘米）Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.做一个无盖锅做一个无盖锅所需铁皮面积所需铁皮面积u 说一说该求哪部分的面积说一说该求哪部分的面积做茶叶桶所做茶叶桶所需铁皮面积需铁皮面积商标纸商标纸面积面积Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.2 2、（如图）如果给下面的笔、（如图）如果给下面的笔筒的侧面贴上彩纸，至少需筒的侧面贴上彩纸，至少需要用多少彩纸？要用多少彩纸？13cm13cm8cm3.143.148 81313=25.12=25.121313=326.56=326.56（c c）答：至少需要答：至少需要326.56326.56平平方厘米。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.圆柱在木板上滚过的轨迹是什么形状？往柱子上涂漆，求涂漆部分面积。Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.做一个通风管所需塑料面积做一个通风管所需塑料面积说一说该求哪部分的面积。说一说该求哪部分的面积。Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.加油啊！压路机滚筒压过的路面的面积。Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.小结：以上几个实例两个底面积都没有，只需求圆柱的侧面积Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.一个没有盖的圆柱形铁皮水桶，高是一个没有盖的圆柱形铁皮水桶，高是24cm，底面直径是，底面直径是20 cm。做这个水桶要。做这个水桶要用铁皮多少平方厘米？（用铁皮多少平方厘米？（得数保留整十得数保留整十平方厘米平方厘米）Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.加油啊！做一个笔筒所需塑料面积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.加油啊！往井的内壁和底面抹水泥，求抹水泥部分的面积。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.小结：以上实例：只有一个底面和一个侧面，即求一个底面积跟一个侧面积的和。Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.茶叶桶底面半径是茶叶桶底面半径是2dm，高是，高是4dm，求做茶叶桶所需铁皮面积？，求做茶叶桶所需铁皮面积？2dm4dm茶叶Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.(1)侧面积：(2)底面积：(3)表面积：Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.一个圆柱形铁皮油桶，高一个圆柱形铁皮油桶，高12dm，底面直径是，底面直径是高的高的 。做这个水桶大约要用多少铁皮？。做这个水桶大约要用多少铁皮？Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.小结：以上实例，有两个底面，一个侧面，即求表面积Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.小结：在解答实际问题前一定要先进行分析，看它们求的是哪部分面积，再选择解答的方法。Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.如果一段圆柱形的木头，截成两截，它的表面积会有什么变化呢？Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.一根圆柱形木材长20分米,把截成4个相等的圆柱体.表面积增加了18.84平方分米.底面的面积是()3.14平方分米Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.达标训练】（1）用铁皮制作圆柱形的通风管10节，每节厂9分米，底面周长3.5方面，至少需要铁皮多少平方米?（2）砌一个圆柱形的水池，底面直径2.5迷，深3米。在池的周围与底面抹上水泥，抹水泥的面积是多少平方米？（3）一个圆柱形的油桶，底面半径4分米，高1米2分米。制这个油桶至少需要用铁皮多少平方米？Evaluation only.Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.