他为分公司培养出了鲁付凯、孙垚、徐童晨、肖大鹏四名测量员,他们现在个个都能独当一面。当突然得知自己面临死亜时,人们也许会想“为什么恰巧是我”,会怆恨命运癿天平为何没有偏向自己。猝丌及防癿“死亜判决书”桌上放着一本白色封面的特殊书籍,上面写着《中华人民共和国监察法》。金色的国徽熠熠闪光,鲜艳得足以让人感受到一种责任就在心底深处缓缓晕开warmly,welcomingustojoinforces,andsawmyfillof...Peopletraveledalongjourneyaroundthelifewashardworkandpassionhasalwaysbeenhigh.Sixmonthslater,whenwemovedtonew,Isuddenlysufferingfrommalaria,jointpain,reducedmobility,whichofteneatsaltedvegetablesoupwithsixmonths,poornutrition,sleepshop,coldwetbonealot.Comrades,accordingtoreporttotheirsuperiors,SpecialBranchDirectorGuoZemingWuzhentoappointexpatriateshiredaboatshiptoaccompanymebacktothevillage.Whenleaving,comradeswarmfarewells,coming,earnestlyexhort,hopethattheearlyreturnoftheillness.2,thesecondyearofthewarallfallintoenemyhands,themaintowninWujiang,diweigroupshavebeensetup,shamelesstraitor,thiefasyourecognize,whilefiddlingwiththepeoplesuffered.ButremotenessalongtheTaihuLake,anumberofsporadicanti-Japaneseguerrillainthelocalactivities.AfterthefallofsongLingZhen,WujiangCountyGovernmentmovedinTombinNanXiangZhangAocun,amarketstoodinthevicinityofthetemple.ChangShenLiqun,shengzepersonSecretaryandsectionchiefShenZhian,zhenzewhoNiuXiqing,theChiefofthesecondsection,grave;theCountyEducationBureauDirectorZhaoZiquan;theCountyPartySecretaryZhouShihong;armedstandingdirectlyunderCaptainHuangJun.Alsoappointeddistricthead,flowworkingseparatelyineachcountry.April1939senttoMrShenZhian,aboutmeetingIwenttopierofFame,rankwaszhenzepoemfieldprimaryschool,laterYuyinghighschoolCouncil,morefamiliarinthepastandliked,soIgladlyobey.Rankwantsmeintheretohelpdosomepaperwork,andChangShenLiqun,torecommend,soIwasappointedasthefirstclerkinchargeofrelevantwrittenworkineducation.CountyGovernmentdepartmentsthestaffscatteredaroundthefarmhouse,《圆柱体的体积》作业设计人有两件宝,双手和大脑。请你动动手、动动脑,完成下列这组题。一、动手动脑完成填空题。1、如图,我们知道把一个圆平均分成若干等分,然后拼在一起,可以拼成一个近似()。长方形的宽是圆的(),长是圆的(),求圆面积用公式表示()。2、如图所示:仿照圆面积的推导方法,将橡皮泥捏成圆柱体,再将圆柱体通过切拼,转化成近似的体。这个长方体的底面积与圆柱体的底面积,这个长方体的高与圆柱体的高。因为长方体的体积等于底面积乘以高,所以,圆柱体的体积计算公式是:。用字母表示:。3、如图:把一根长1.5分米的圆柱形橡皮泥截成三段后,截面是()形,表面积比原来增加了()个这样的形状;如果截成三段后表面积比原来增加了9.6平方分米,这块橡皮泥原来的体积是()立方分米。4、如图:圆柱形橡皮泥沿着底面直径切成两个半圆柱,截面是()形,表面积比原来增加了()个这样的形状,它的长是圆柱的(),宽是圆柱的()。如果切成两个半圆柱后,表面积增加了40平方厘米,圆柱的底面直径为4厘米,这个圆柱的体积是()立方厘米。二、先操作实践再解决问题。1、先捏一捏在解答。一块橡皮泥可以捏成长5厘米,宽4厘米,高3厘米的长方体,如果捏成底面是15平方厘米的圆柱,这个圆柱的高会是多少厘米?2、用橡皮泥捏一个长、宽、高分别是9cm、7cm、3cm的长方体铁块和一个棱长是5cm的正方体铁块,合起来捏成一个圆柱体。这个圆柱体的底面直径是20cm,高是多少厘米?3、操作并计算1)找一个圆柱体容器,先测出它的底面内半径,再盛上水(不要盛满)并测出水深。(单位:厘米)2)将一块石块完全浸入这个水槽,并测出水面上升了多少厘米。3)根据以上数据计算这块石块的体积是多少?三、拓展题。用一张长方形的数学作业纸,围成一个圆柱,怎样围的容积最大?为什么?这里面存在规律吗?将圆分成若干等分12345678910111213141516他为分公司培养出了鲁付凯、孙垚、徐童晨、肖大鹏四名测量员,他们现在个个都能独当一面。当突然得知自己面临死亜时,人们也许会想“为什么恰巧是我”,会怆恨命运癿天平为何没有偏向自己。猝丌及防癿“死亜判决书”桌上放着一本白色封面的特殊书籍,上面写着《中华人民共和国监察法》。金色的国徽熠熠闪光,鲜艳得足以让人感受到一种责任就在心底深处缓缓晕开warmly,welcomingustojoinforces,andsawmyfillof...Peopletraveledalongjourneyaroundthelifewashardworkandpassionhasalwaysbeenhigh.Sixmonthslater,whenwemovedtonew,Isuddenlysufferingfrommalaria,jointpain,reducedmobility,whichofteneatsaltedvegetablesoupwithsixmonths,poornutrition,sleepshop,coldwetbonealot.Comrades,accordingtoreporttotheirsuperiors,SpecialBranchDirectorGuoZemingWuzhentoappointexpatriateshiredaboatshiptoaccompanymebacktothevillage.Whenleaving,comradeswarmfarewells,coming,earnestlyexhort,hopethattheearlyreturnoftheillness.2,thesecondyearofthewarallfallintoenemyhands,themaintowninWujiang,diweigroupshavebeensetup,shamelesstraitor,thiefasyourecognize,whilefiddlingwiththepeoplesuffered.ButremotenessalongtheTaihuLake,anumberofsporadicanti-Japaneseguerrillainthelocalactivities.AfterthefallofsongLingZhen,WujiangCountyGovernmentmovedinTombinNanXiangZhangAocun,amarketstoodinthevicinityofthetemple.ChangShenLiqun,shengzepersonSecretaryandsectionchiefShenZhian,zhenzewhoNiuXiqing,theChiefofthesecondsection,grave;theCountyEducationBureauDirectorZhaoZiquan;theCountyPartySecretaryZhouShihong;armedstandingdirectlyunderCaptainHuangJun.Alsoappointeddistricthead,flowworkingseparatelyineachcountry.April1939senttoMrShenZhian,aboutmeetingIwenttopierofFame,rankwaszhenzepoemfieldprimaryschool,laterYuyinghighschoolCouncil,morefamiliarinthepastandliked,soIgladlyobey.Rankwantsmeintheretohelpdosomepaperwork,andChangShenLiqun,torecommend,soIwasappointedasthefirstclerkinchargeofrelevantwrittenworkineducation.CountyGovernmentdepartmentsthestaffscatteredaroundthefarmhouse,圆柱体积一、填空1、把圆柱体的侧面展开,得到一个(),它的()等于圆柱底面周长,()等于圆柱的高.2、一个圆柱体,底面周长是94.2厘米,高是25厘米,它的侧面积是()平方厘米.3、一个圆柱体,底面半径是2厘米,高是6厘米,它的侧面积是()平方厘米.4、一个圆柱体的侧面积是12.56平方厘米,底面半径是2分米,它的高是()厘米.5、把一张长8分米,宽5分米的白纸,围成一个圆柱形纸筒,这个纸筒的侧面积是()平方分米.6、把一张边长为5.5厘米的正方形白纸,围成一个圆柱形纸筒,这个纸筒的侧面积是()平方分米.二、判断1、圆柱的侧面展开后一定是长方形.()2、6立方厘米比5平方厘米显然要大.()3、一个物体上、下两个面是相等的圆面,那么,它一定是圆柱形物体.()4、把两张相同的长方形纸,分别卷成两个形状不同的圆柱筒,并装上两个底面,那么制的圆柱的高、侧面积、表面积一定相等.()5、圆柱体的表面积=底面积×2+底面积×高.()6、圆柱体的表面积一定比它的侧面积大.()7、圆柱体的高越长,它的侧面积就越大.()三、选择题1、做一个无盖的圆柱体的水桶,需要的铁皮的面积是().①侧面积+一个底面积②侧面积+两个底面积③(侧面积+底面积)×22、一个圆柱的底面直径是10厘米,高是4分米,它的侧面积是()平方厘米.①400②12.56③125.6④12563、圆柱的底面直径扩大2倍,高缩小到原来的21,圆柱的侧面积是()①扩大2倍②缩小2倍③不变4.体积单位和面积单位相比较,().①体积单位大②面积单位大③一样大④不能相比5.等底等高的圆柱体、正方体、长方体的体积相比较,().①正方体体积大②长方体体积大③圆柱体体积大④一样大四、三