[img]ct_gre5image022[/img]If 9 trees are originally planted in a circular patte

游客2025-02-24 17

问题

If 9 trees are originally planted in a circular pattern as shown above, what is the least number of trees that must be transplanted so that the 9 trees will be in 2 straight rows?

选项 A、4
B、5
C、6
D、7
E、8

答案 B

解析若9棵树最初以如左图所示的圆形种植，要使9棵树排在两条直线上，问最少需移植几棵树?
解：本题的正确答案为(B)。圆上的任意三点都不在同一条直线上，又根据在同一平面内的两点确定一条直线可知，要使这9棵树排在两条直线上，则至少得有9-2×2=5棵树被移植。

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[img]ct_gre5image022[/img]If 9 trees are originally planted in a circular patte

[img]ct_gre5image038[/img]Arectangularlabelisattachedtoarightcircularc

[img]ct_gre5image044[/img]TheareaofthecircularregionwithcenterOis16∏,

[img]ct_4image006[/img]Asquaredartboardhasfourdarkcircularregionsofra

Acircularflowerbedisinscribedinaflat,squaregardenplotthatmeasuresx

Johnisbuildingacircularfencearoundhiscircularpool.Thepoolis26feet

ThevolumeVofarightcircularcylinderisV=πr2h,whereristheradiusoft

Inthefigureabove,theareaofthecircularregionwithcenterOis16π,ifAB

Acircularwheeltravelsalongaflatsurfaceataconstantrateof2.5feetper

ManywritersassociatedwiththeHarlemRenaissancewerenotoriginallyfromHar

Originally,mostintellectualcriticismofmassculturewas(i)____incharacter

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