首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
一个直角三角形的两条直角边长分别为1和2，将该三角形分别绕其两个直角边旋转得到的两个圆锥的体积之比为（ ）
查看本题答案
包含此试题的试卷
高三下学期数学《》真题及答案
点击查看
你可能感兴趣的试题
一个直角三角形的两条直角边分别为6和8那么这个直角三角形斜边上的高为
已知一个直角三角形的两条边长分别为3和4则第三边长是
.已知直角三角形的两条直角边长分别为5和那么这个三角形的周长为______.
一个直角三角形的两条直角边长分别为厘米和厘米则这个直角三角形的面积是________.
一个直角三角形中两直角边分别为3和4下列说法正确的是
）斜边长为5 （
）斜边长7 （
）三角形周长为25 （
）三角形面积为20
若一个直角三角形的三条边长是三个自然数其中有两边的长分别为6和10那么这个三角形的第三条边长是___
一个直角三角形的两条直角边长分别为厘米和厘米则这个直角三角形的面积是________.
已知直角三角形的两条直角边长分别为6cm和8cm则这个直角三角形的外接圆的半径为cm.
一个直角三角形的两条直角边长分别为厘米和厘米则这个直角三角形的面积是________.
一个直角三角形两直角边长分别为3和4下列说法正确的是
斜边长为5
三角形的周长为25
斜边长为25
三角形的面积为20
已知直角三角形的两直角边长分别为5和12则三角形的周长为
已知一个直角三角形的两条直角边分别为6cm8cm那么这个直角三角形斜边上的高为_________;
已知一个直角三角形的两边长分别为3和4则这个三角形的周长是
有下列命题①两直线平行同旁内角相等②面积相等的两个三角形全等③有一个角为45°的等腰三角形必为直角三
0
1
2
3
若一个直角三角形的两边长分别为12和5则此三角形的第三边长为.
某加工厂有一个直角三角形的铁板两条直角边分别是3米和4米加工厂老板想用这个铁板截出一个边长比为12的
下列命题中是假命题的是
如果一个直角三角形的两条直角边与另一个直角三角形的两条直角边对应相等，那么这两个直角三角形全等
等腰三角形顶角的平分线把它分成两个全等的三角形
周长相等的两个三角形全等
有一条直角边对应相等的两个等腰直角三角形全等
若一个直角三角形的两边长分别为12和5则此三角形的第三边长为______.
已知一个直角三角形的两条直角边分别为68则此三角形斜边是斜边上的高为.
直角三角形的两条边长分别为5cm12cm则该直角三角形斜边上的中线长为____cm.
热门试题
更多
Readingcanbeasocialactivity.Thinkofthepeoplewhobelongtobookgroups.Theychoosebookstoreadandthenmeettodiscussthem.NowthewebsiteBookCrossing.comBookCrossing.comturnsthepageonthetraditionalideaofabookgroup. Membersgoonthesiteandregisterthebookstheyownandwouldliketoshare.BookCrossingprovidesanidentificationnumbertostickinsidethebook.Thenthepersonleavesitinapublicplacehopingthatthebookwillhaveanadventuretravelingfarandwidewitheachnewreaderwhofindsit. BrucePedersonthemanagingdirectorofBookCrossingsaysThetwothingsthatchangeyourlifearethepeopleyoumeetandbooksyouread.BookCrossingcombinesboth. Membersleavebooksonparkbenchesandbusesintrainstationsandcoffeeshops.Whoeverfindstheirbookwillgotothesiteandrecordwheretheyfoundit. Peoplewhofindabookcanalsoleaveajournalentrydescribingwhattheythoughtofit.E﹣mailsarethensenttotheBookCrossingtokeepthemupdatedaboutwheretheirbookshavebeenfound.Brucepetersonsaystheideaisforpeoplenottobeselfishbykeepingabooktogatherdustonashelfathome. BookCrossingispartofatrendamongpeoplewhowanttogetbacktotherealandnotthevirtual虚拟.Thesitenowhasmorethanonemillionmembersinmorethanonehundredthirty﹣fivecountries. 29.Whydoestheauthormentionbookgroupsinthefirstparagraph? A.Toexplainwhattheyare. B.TointroduceBookCrossing. C.Tostresstheimportanceofreading. D.Toencouragereaderstosharetheirideas. 30.WhatdoestheunderlinedworditinParagraph2referto? A.Thebook. B.Anadventure. C.Apublicplace. D.Theidentificationnumber. 31.WhatwillaBookCrosserdowithabookafterreadingit? A.Meetotherreaderstodiscussit. B.Keepitsafeinhisbookcase. C.Passitontoanotherreader. D.Mailitbacktoitsowner. 32.Whatisthebesttitleforthetext? A.OnlineReading:AVirtualTour B.ElectronicBooks:AnewTrend C.ABookGroupBringsTraditionBack D.AWebsiteLinksPeoplethroughBooks.
甲乙丙三位同学被问到是否去过ABC三个城市时 甲说我去过的城市比乙多但没去过B城市 乙说我没去过C城市 丙说我们三人去过同一城市 由此可判断乙去过的城市为．
将函数的图象向右平移个单位得到函数gx的图象则下列说法不正确的是
Agardenthat'sjustrightforyou Haveyouevervisitedagardenthatseemedjustrightforyouwheretheatmosphereofthegardenappearedtototalmorethanthesum总和ofitsparts?36.Butitdoesn'thappenbyaccident.Itstartswithlookinginsideyourselfandunderstandingwhoyouarewithrespecttothenaturalworldandhowyouapproachthegardeningprocess. ●37 Somepeoplemaythinkthatagardenisnomorethanplantsflowerspatternsandmassesofcolor.Othersareconcernedaboutusinggardeningmethodsthatrequirelesswaterandfewerfertilizers肥料.38.Howeverthereareanumberofotherreasonsthatmightexplainwhyyouwanttogarden.Oneofthemcomesfromourearliestyears. ●Recall回忆yourchildhoodmemories Ourmodelofwhatagardenshouldbeoftengoesbacktochildhood.Grandma'srosegardenandDad'svegetablegardenmightbegoodorbadbutthat'snotwhat'simportant.39﹣﹣howbeinginthosegardensmadeusfeel.Ifyou'dliketobuildapowerfulbondwithyourgardenstartbytakingsometimetorecallthegardensofyouryouth.40thengooutsideandworkoutaplantotranslateyourchildhoodmemoriesintoyourgrown﹣upgarden.Havefun. A.Knowwhyyougarden B.Findagoodplaceforyourowngarden C.It'sourexperienceofthegardenthatmatters D.It'sdelightfultoseesomanybeautifulflowers E.Stillothersmaysimplyenjoybeingoutdoorsandclosetoplants F.Youcanproducethatkindofmagicalqualityinyourowngardentoo G.Foreachofthosegardenswriterdownthestrongestmemoryyouhave.
设函数fx=|2x+2|﹣|x﹣2|． 1求不等式fx＞2的解集 2x∈Rfx≥t2﹣t恒成立求实数t的取值范围．
假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加:在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除:把多余的词用斜线\划掉. 修改:在错的词下划一横线并在该词下面写出修改后的词. 注意:1.每处错误及其修改均仅限一词; 2.只允许修改10处多者从第11处起不计分. Theteenageyearfrom13to19werethemostdifficulttimeforme.Theywerealsothebestandworseyearsinmylife.AtthefirstIthoughtIkneweverythingandcouldmakedecisionsbyyourself.Howevermyparentsdidn'tseemtothinksuch.Theyalwaystellmewhattodoandhowtodoit.AtonetimeIevenfeltmyparentscouldn'tunderstandmesoIhopedIcouldbefreelyfromthem.IshowedthemIwasindependentbywearstrangeclothes.NowIamleavinghometocollege.AtlastIwillbeonmyownbutIstillwanttohavemyparentstoturntowheneverneedhelp.
Thestudysuggeststhatthecultureswegrowupinfluencethebasicprocessesbywhichweseeworldaroundus. A.on B.in C.at D.about
假定你是李华你校摄影俱乐部photographyclub将举办国际中学摄影展.请给你的英国朋友Peter写封信.请他提供作品.信的内容包括: 1.主题:环境保护; 2.展览时间; 3.投稿邮箱:intlphotoshow@gmschool.com. 注意: 1.词数100左右; 2.可以适当增加细节以使行文连贯.
设函数fx=asinx+x3+1若f2=3则f﹣2=．
Badnewssells.Ifitbleedsitleads.Nonewsisgoodnewsandgoodnewsisnonews.Thosearetheclassicrulesfortheeveningbroadcastsandthemorningpapers.Butnowthatinformationisbeingspreadandmonitored监控indifferentwaysresearchersarediscoveringnewrules.Bytrackingpeople'se﹣mailsandonlinepostsscientistshavefoundthatgoodnewscanspreadfasterandfartherthandisastersandsobstories. The‘ifitbleeds'ruleworksformassmediasaysJonahBergerascholarattheUniversityofPennsylvania.Theywantyoureyeballsanddon'tcarehowyou'refeeling.Butwhenyoushareastorywithyourfriendsyoucarealotmorehowtheyreact.Youdon'twantthemtothinkofyouasaDebbieDowner. Researchersanalyzingword﹣of﹣mouthcommunication﹣e﹣mailsWebpostsandreviewsface﹣to﹣faceconversations﹣foundthatittendedtobemorepositivethannegative消极的butthatdidn'tnecessarilymeanpeoplepreferredpositivenews.Waspositivenewssharedmoreoftensimplybecausepeopleexperiencedmoregoodthingsthanbadthings?TotestforthatpossibilityDr.Bergerlookedathowpeoplespreadaparticularsetofnewsstories:thousandsofarticlesonTheNewYorkTimes'website.HeandaPenncolleagueanalyzedthemoste﹣mailedlistforsixmonths.Oneofhisfirstfindswasthatarticlesinthesciencesectionweremuchmorelikelytomakethelistthannon﹣sciencearticles.HefoundthatscienceamazedTimes'readersandmadethemwanttosharethispositivefeelingwithothers. Readersalsotendedtosharearticlesthatwereexcitingorfunnyorthatinspirednegativefeelingslikeangeroranxietybutnotarticlesthatleftthemmerelysad.Theyneededtobearoused激发onewayortheotherandtheypreferredgoodnewstobad.ThemorepositiveanarticlethemorelikelyitwastobesharedasDr.BergerexplainsinhisnewbookContagious:WhyThingsCatchOn. 12.Whatdotheclassicrulesmentionedinthetextapplyto? A.Newsreports. B.Researchpapers. C.Privatee﹣malls. D.Dailyconversations. 13.WhatcanweinferaboutpeoplelikeDebbieDowner? A.They'resociallyinactive. B.They'regoodattellingstories. C.They'reinconsiderateofothers. D.They'recarefulwiththeirwords. 14.Whichtendedtobethemoste﹣mailedaccordingtoDr.Berger'sresearch? A.Sportsnew. B.Sciencearticles. C.Personalaccounts. D.Financialreviews. 15.Whatcanbeasuitabletitleforthetext? A.SadStoriesTravelFarandWide. B.OnlineNewsAttractsMorePeople. C.ReadingHabitsChangewiththeTimes. D.GoodNewsBeatsBadonSocialNetworks.
onlineshoppinghaschangedourlifenotallofitseffectshavebeenpositive. A.Since B.After C.While D.Unless
以抛物线Cy2=2pxp＞0的顶点为圆心的圆交C于AB两点交C的准线于DE两点．已知|AB|=2|DE|=2则p等于．
若xy满足约束条件则z=2x﹣y的最大值为．
InmanywaystheeducationsystemintheUSisnotverydifferentfromintheUK. A.that B.this C.one D.it
在平面直角坐标系中已知曲线C的参数方程为φ为参数以原点为极点x轴的非负半轴为极轴建立极坐标系． 1求曲线C的极坐标方程 2过点P12倾斜角为135°的直线l与曲线C交于MN两点求PM2+PN2的值．
过双曲线x2﹣的右支上一点P分别向圆C1x+22+y2=4和圆C2x﹣22+y2=1作切线切点分别为MN则|PM|2﹣|PN|2的最小值为
如图程序框图的算法思路源于我国古代数学名著九章算术中的“更相减损术”．执行该程序框图若输入的ab分别为1218则输出的a的值为
OnoneofhertripstoNewYorkseveralyearsagoEudoraWeltydecidedtotakeacoupleofNewYorkfriendsouttodinner.TheysettledinatacomfortableEastSidecafeandwithinminutesanothercustomerwasapproachingtheirtable. Heyaren'tyoufromMississippi?theelegantwhite﹣hairedwriterrememberedbeingaskedbythestranger.I'mfromMississippitoo. WithoutasecondthoughtthewomanjoinedtheWeltyparty.Whenherdinnerpartnershowedupshealsopulledupachair. TheybegantellingmeallthenewsofMississippiWeltysaid.Ididn'tknowwhatmyNewYorkfriendswerethinking. TaxisonarainyNewYorknightarerarerthansunshine.Bythetimethegroupgotuptoleaveitwaspouringoutside.Welty'snewfriendsimmediatelysentawaitertofindacab.Headingbackdowntowntowardherhotelherbig﹣cityfriendswereamazedattheturnofeventsthathadchangedtheirBigAppledinnerintoaMississippi. Myfriendsaid:‘Nowwebelieveyourstories'Weltyadded.AndIsaid:‘Nowyouknow.Thesearethepeoplethatmakemewritethem.' SittingonasofainherroomWeltyaslimfigureinasimplegraydresslookedpleasedwiththisexplanation. Idon'tmakethemupshesaidofthecharactersinherfictiontheselast50orsoyears.Idon'thaveto. BeauticiansbartenderspianoplayersandpeoplewithpurplehatsWelty'speoplecomefromafternoonsspentvisitingwitholdfriendsfromwalksthroughthestreetsofhernativeJacksonMissfromconversationsoverheardonabus.ItannoysWeltythatat78herleftearhasnowgivenout.Sometimessittingonabusoratrainshehearsonlyafragment片段ofaparticularlyinterestingstory. 1WhathappenedwhenWeltywaswithherfriendsatthecafe? A.Twostrangersjoinedher. B.Herchildhoodfriendscamein C.Aheavyrainruinedthedinner. D.Somepeopleheldapartythere. 2TheunderlinedwordtheminParagraph6referstoWelty's. A.readers B.parties C.friends D.stories 3WhatcanwelearnaboutthecharactersinWelty'sfiction? A.Theyliveinbigcities B.Theyaremostlywomen C.Theycomefromreallife D.Theyarepleasureseekers
已知椭圆C=1a＞b＞0的焦距为2椭圆C上任意一点到椭圆两个焦点的距离之和为6． Ⅰ求椭圆C的方程 Ⅱ设直线ly=kx﹣2与椭圆C交于AB两点点P01且|PA|=|PB|求直线l的方程．
在等差数列{an}中a3=5a5=9若Sn=25则n=
某汽车公司为调查4S店个数对该公司汽车销量的影响对同等规模的ABCD四座城市的4S店一季度汽车销量进行了统计结果如表 1根据统计的数据进行分析求y关于x的线性回归方程 2该公司为扩大销售拟定在同等规模的城市E开设4个4S店预计E市的4S店一季度汽车销量是多少台 附回归方程=中的斜率和截距的最小二乘法估计公式分别为 ==﹣
如图AB是⊙O的直径CF是⊙O上的两点OC⊥AB过点F作⊙O的切线FD交AB的延长线于点D．连接CF交AB于点E． 1求证DE2=DB•DA 2若DB=2DF=4试求CE的长．
甲乙丙三人参__群抢红包游戏规则如下每轮游戏发50个红包每个红包金额为x元x∈[15]．已知在每轮游戏中所产生的50个红包金额的频率分布直方图如图所示． Ⅰ求a的值并根据频率分布直方图估计红包金额的众数 Ⅱ以频率分布直方图中的频率作为概率若甲乙丙三人从中各抢到一个红包其中金额在[12的红包个数为X求X的分布列和期望．
Ifyoufeelstressedbyresponsibilitiesatworkyoushouldtakeastepbackandidentify识别thoseof61greatandlessimportance.Thenhandlethemostimportanttasksfirstsoyou'llfeelarealsenseof62achieve.Leavingthelessimportantthingsuntiltomorrow63beoftenacceptable. Mostofusaremorefocused64ourtasksinthemorningthanwearelaterintheday.Sogetanearlystartandtrytobeasproductive65possiblebeforelunch.Thiswillgiveyoutheconfidenceyouneedtogetyouthroughtheafternoonandgohomefeelingaccomplished. Recent66studyshowthatwearefarmoreproductiveatworkifwetakeshortbreaks67regular.Giveyourbodyandbrainarestbysteppingoutsidefor68whileexercisingordoingsomethingyouenjoy. Ifyoufindsomethingyoulovedoingoutsideoftheofficeyou'llbelesslikely69bringyourworkhome.Itcouldbeanything﹣gardeningcookingmusicsports﹣butwhateveritis70makesureit'sarelieffromdailystressratherthananotherthingtoworryabout.
若复数z1=1+3iz2=2+i则=
已知平面α⊥平面βm是α内的一条直线n是β内的一条直线且m⊥n则
椭圆M+=1a＞b＞0的离心率e=过点A﹣a0和B0b的直线与原点间的距离为． 1求椭圆M的方程 2过点E10的直线l与椭圆M交于CD两点且点D位于第一象限当=3时求直线l的方程．
What'sOn? ElectricUnderground 7.30pm﹣1.00amFreeattheCyclopsTheatre Doyouknowwho'splayinginyourarea?We'rebringingyouaneveningofliverockandpopmusicfromthebestlocalbands.Areyouinterestedinbecomingamusicianandgettingarecordingcontract合同?Ifsocomeearlytothetalkat7.30pmbyJulesSkyeasuccessfulrecordproducer.He'sgoingtotalkabouthowyoucanfindtherightpersontoproduceyoumusic. GeeWhizz 8.30pm﹣10.30pmComedyatKaleidoscope ComeandseeGeeWhizzperform.He'sthefunnieststand﹣upcomedianonthecomedyscene.Thisjoyfulshowwillpleaseeveryonefromtheyoungesttotheoldest.GeeWhizzreallyknowshowtomakeyoulaugh!Ourbarisopenfrom7.00pmfordrinksandsnacks快餐. Simon'sWorkshop 5.00pm﹣7.30pmWednesdaysatVictoriaStage Thisisagoodchanceforanyonewhowantstolearnhowtodocomedy.Theworkshoplooksateverykindofcomedyandpracticesmanydifferentwaysofmakingpeoplelaugh.Simonisacomedianandactorwhohas10years'experienceofteachingcomedy.Hisworkshopsareexcitingandfun.AneveningwithSimonwillgiveyoutheconfidencetobefunny. CharlotteStone 8.00pm﹣11.00pmPizzaWorld Finefoodwithbeautifuljazzmusic;thisisagreateveningout.CharlotteStonewillperformsongsfromhernewbest﹣sellingCDwithJamesPickeringonthepiano.ThemenuisItalianwithexcellentmeatandfreshfishpizzasandpasta面食.Bookearlytogetatable.Ourbarisopenalldayandservescocktailscoffeebeerandwhitewine. 21.Whocanhelpyouifyouwanttohaveyourmusicproduced? A.JulesSkye.B.GeeWhizz. C.CharlotteStone.D.JamesPickering. 22.Atwhichplacecanpeopleofdifferentagesenjoyagoodlaugh? A.TheCyclopsTheatreB.Kaleidoscope C.VictoriaStageD.PizzaWorld 23.WhatdoweknowaboutSimon'sWorkshop? A.Itrequiresmembershipstatus. B.Itlaststhreehourseachtime. C.Itisrunbyacomedyclub. D.ItisheldeveryWednesday. 24.WhenwillCharlotteStoneperformhersongs? A.5.00pm﹣7.30pm. B.7.30pm﹣1.00am. C.8.00pm﹣11.00pm. D.8.30pm﹣10.30pm.
﹣﹣Areyousureyou'rereadyforthetest? ﹣﹣.I'mwellpreparedforit. A.I'mafraidnot B.Noproblem C.Hardtosay D.Notreally
WhenIwas13myonlypurposewastobecomethestaronourfootballteam.Thatmeant1MillerKingwhowasthebest2atourschool. FootballseasonstartedinSeptemberandallsummerlongIworkedout.Icarriedmyfootballeverywherefor3. JustbeforeSeptemberMillerwasstruckbyacarandlosthisrightarm.Iwenttoseehimafterhecamebackfrom4.Helookedvery5buthedidn′tcry. ThatseasonI6allofMiller′srecordswhilehe7thehomegamesfromthebench.Wewent10﹣1andIwasnamedmostvaluableplayer8IoftenhadcrazydreamsinwhichIwastoblameforMiller′s9. OneafternoonIwascrossingthefieldtogohomeandsawMiller10goingoverafence﹣whichwasn′t11toclimbifyouhadbotharms.I′msureIwasthelastpersonintheworldhewantedtoaccept12from.Buteventhatchanllengeheaccepted.I13himmoveslowlyoverthefence.Whenwewerefinally14ontheothersidehesaidtomeYouknowIdidn′ttellyouthisduringtheseasonbutyoudid15.Thankyouforfillinginfor16. Hiswordsfreedmefrommybad17.Ithoughttomyselfhowevenwithoutanarmhewasmoreofaleader.Damagedbutnotdefeatedhewas18aheadofme.Iwasrighttohave19him.FromthatdayonIgrew20andalittlemorereal. 1A.cheeringfor B.beatingout C.relyingon D.stayingwith 2A.coach B.student C.teacher D.player 3A.practice B.show C.comfort D.pleasure 4A.school B.vacation C.hospital D.training 5A.pale B.calm C.relaxed D.ashamed 6A.held B.broke C.set D.tried 7A.reported B.judged C.organized D.watched 8A.and B.then C.but D.thus 9A.decision B.mistake C.accident D.sacrifice 10A.stuck B.hurt C.tired D.lost 11A.steady B.hard C.fun D.fit 12A.praise B.advice C.assistance D.apology 13A.let B.helped C.had D.noticed 14A.dropped B.ready C.trapped D.safe 15A.fine B.wrong C.quickly D.normally 16A.us B.yourself C.me D.them 17A.memories B.ideas C.attitudes D.dreams 18A.still B.also C.yet D.just 19A.challenged B.cured C.invited D.admired 20A.healthier B.bigger C.cleverer D.cooler
热门题库
更多
高一下学期物理
高三下学期数学
高三上学期数学
高一下学期英语
教案备课库
高一上学期生物
高一下学期生物
高二上学期数学
高二上学期物理
高二上学期英语
高二上学期生物
高二下学期数学
高二上学期化学
高二下学期物理
高三下学期物理
高三上学期物理
湘公网安备 43130202000226号