首页
登录
职称英语
[img]ct_4image006[/img]A square dart board has four dark circular regions of ra
[img]ct_4image006[/img]A square dart board has four dark circular regions of ra
游客
2024-01-12
42
管理
问题
A square dart board has four dark circular regions of radius 3 inches, as shown in the design above. Each point on the dart board is equally likely to be hit by a dart that hits the board. What is the probability that a dart that hits the board will hit one of the circular regions?
选项
A、п/16
B、п/48
C、п/64
D、1/3
E、1/4
答案
A
解析
如上面的图样所示,1个正方形的标枪板上有4个半径为3英寸的圆形的黑色区域。标枪击中标枪板上的每个点的概率相同,击中标枪板的标枪击中4个圆形区域中的某一个的概率是多大?
解:本题的正确答案是(A)。该题其实是问4个圆形区域的面积占标枪板的总面积的几分之几,这个分数就是击中标枪板的标枪击中4个圆形区域中的某一个的概率.
转载请注明原文地址:https://tihaiku.com/zcyy/3356712.html
相关试题推荐
Ditramaisafederationmadeupofthreeautonomousregions:Korva,MitroandGu
[img]ct_gre5image038[/img]Arectangularlabelisattachedtoarightcircularc
[img]ct_gre5image040[/img]Thefigureaboveshowsalargesquareformedbyfitti
Whatisthemaximumnumberofnonover-lappingregionsintowhich3linescandiv
Howmanypositivewholenumberslessthan81areNOTequalsquaresofwholenumb
Acircularflowerbedisinscribedinaflat,squaregardenplotthatmeasuresx
Arectangularfloorwithanareaof12squaremetersisdrawntoscalewith2ce
[img]ct_gre5image042[/img]Theareasofthetwoshadedregionsofthecircleare
Johnisbuildingacircularfencearoundhiscircularpool.Thepoolis26feet
Express3×3asasquare:______Threetimes3canbestatedas"3squared."The
随机试题
在不久的将来,北京将变得更加干净漂亮。Inthenearfuture,Beijingwillbecomecleanerandmorebea
Don’tbelate.Ihatetobewaitingforalongtime.A、beingkeepingB、bekeptC、
Volumeshavebeenwrittenabouttechnology’sabilitytoconnectpeople.But
小叶性肺炎是()。A.出血性炎 B.化脓性炎 C.纤维素性炎 D.浆液性
()是实贷实付的基本要求。A.协议承诺 B.满足有效信贷需求 C.受托支付
关于垃圾掩埋说法错误的是()。A:挖坑填埋需要一定的投资 B:在未填埋期间仍有
甲国公民玛丽与中国公民王某经常居住地均在中国,2人在乙国结婚。关于双方婚姻关系的
利多卡因一次最大用量为A.10~50mg B.80~100mg C.300~
关于税法适用原则的说法,正确的是( )。A.新法优于旧法原则的适用,以新法公布
以下不属于级配型的是()。A.级配碎石 B.级配砾石 C.符合级配的天然砂
最新回复
(
0
)