A circular wheel travels along a flat surface at a constant rate of 2.5 feet per

游客2024-01-12 33

问题 A circular wheel travels along a flat surface at a constant rate of 2.5 feet per second. How many complete revolutions will the wheel make in 50 seconds if its diameter is 3 feet?

选项 A、6
B、10
C、13
D、14
E、19

答案 C

解析 50秒内轮子走过的距离：轮子的周长(πd)×圈数。50×2.5=π×3×revolutions=13＜revolution＜14。

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A circular wheel travels along a flat surface at a constant rate of 2.5 feet per

Howmuchlongeristheedgeofacubewithasurfaceareaof1,350thantheedge

Acircularwheeltravelsalongaflatsurfaceataconstantrateof2.5feetper

Inthefigureabove,theareaofthecircularregionwithcenterOis16π,ifAB

Dr.TonegawawontheNobelPrizefordiscoveringhowthebodycanconstantlycha

ElNino,theperiodicabnormalwarmingoftheseasurfaceoffPeru,aphenomenon

In1974alargeareaofthesurfaceofMercurywasphotographedfromvaryingdis

Incontrastwithadarksurfaceanditstendencytowardheatabsorption,alarge

[img]ct_gre5image038[/img]Arectangularlabelisattachedtoarightcircularc

[img]ct_gre5image022[/img]If9treesareoriginallyplantedinacircularpatte

[img]ct_4image006[/img]Asquaredartboardhasfourdarkcircularregionsofra

A--NoTurnB--HandlewithCareC--Please

Asuccessionoflossofthebelovedrelatives_________hersenses.A、bruisedB、b

A.instructionsB.hesitationC.faintedD.urgentE.instructF.relief

CarcrashesaretheleadingcauseofinjuryanddeathamongU.S.children,a

粤菜即广东菜(Cantonesecuisine)，是中国传统八大菜系之一，由中外饮食文化汇合并结合地域气候特点不断创新而成。粤菜在国外是中国的代表菜系，

连续浇筑大体积混凝土，要求每200m3或每一工作班应制取混凝土试件不少于（）。

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