What is the area of a circle with a circumference of 14π inches?

admin2013-02-19 6

问题 What is the area of a circle with a circumference of 14π inches?

选项

答案49π

解析 The equation for the area of a circle is A = πr². The equation for the circumference of a circle is C = 2πr. Since you are given the circumference, you can use that to find the radius, r, and then use the radius to find the area:
14π=πr
14 = 2r
r = 7
Now substitute r into the equation for area:
Area = π(7²)
Area = 49π

转载请注明原文地址:https://kaotiyun.com/show/jjkO777K

本试题收录于： GRE QUANTITATIVE题库GRE分类

GRE QUANTITATIVE

GRE

相关试题推荐

ThefirstyearofschoolinAmerica,knownaskindergarten,usuallybeginsbetweentheagesoffiveandsix.Amongrichcountrie
ThefirstyearofschoolinAmerica,knownaskindergarten,usuallybeginsbetweentheagesoffiveandsix.Amongrichcountrie
Ialwaysencouragesuchpeople,butIalsoexplainthatthere’sabigdifferencebetween"beingawriter"andwriting.
Somepeoplethinkoflifeasagame.Therearesimilaritiesbetweenlifeandgames;bothcanbeplayed,bothhaverules,andbot
AsTheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair
IntriangleABCabove,if∠BADand∠ADBhavemeasuresof4n,∠ACBhasameasureofn,and∠DBChasameasureof45°,whatisthe
Ifthelengthsoftwoofthesidesofatriangleare9and10,whichofthefollowingcouldbethelengthofthethirdside?Ⅰ.
Ifaandbarethelengthsofthelegsofarighttri-anglewhosehypotenuseis10andwhoseareais20,whatisthevalueof(a
Whatisthehypotenuseofarighttrianglewithabaseof9cmandanareaof54cm2?

随机试题

某村村民吴某因家里人口多，住房紧张,向乡政府提出建房申请。经乡人民政府土地管理员刘某批准后，即开始划线动工。周围左邻申某与右邻崔某发现吴某占用了自己使用多年的宅基地，即同吴某交涉。吴某申辩说建房是按批准文件划线动工，不同意改变施工计划。如申某与崔某申请
下列变化中不属于中性粒细胞毒性变化的是
某鸡场1500只240N龄罗曼蛋鸡发病，产蛋率下降。少数鸡精神沉郁，每隔2～3天有个别鸡死亡，病死鸡皮下脂肪多，腹腔内有大量脂肪沉积，充满血样液体，肝肿大，包膜破裂、质松软易碎、有油腻感。该病最有效的治疗药物是()
根据形成苷键的原子分类，属于s-苷的是
下列楼板平面布置图中，建筑形体平面规则的是()。
下列关于货币现值和终值的说法中，正确的有()。
被称为“第二代基因工程”的是()。
[A]star[B]ticket[C]creditcard[D]piano[E]restaurant[F]beer[G]umbrella
Whendoestheplanetakeoff?WhichpartofthefactorydoesAlanwanttochange?
WorkisaveryimportantpartoflifeintheUnitedStates.WhentheearlyProtestant【1】cametothiscountry,theybroughtthe【

最新回复(0)

What is the area of a circle with a circumference of 14π inches?

GRE QUANTITATIVE

GRE

ThefirstyearofschoolinAmerica,knownaskindergarten,usuallybeginsbetweentheagesoffiveandsix.Amongrichcountrie

ThefirstyearofschoolinAmerica,knownaskindergarten,usuallybeginsbetweentheagesoffiveandsix.Amongrichcountrie

Ialwaysencouragesuchpeople,butIalsoexplainthatthere’sabigdifferencebetween"beingawriter"andwriting.

Somepeoplethinkoflifeasagame.Therearesimilaritiesbetweenlifeandgames;bothcanbeplayed,bothhaverules,andbot

AsTheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair

IntriangleABCabove,if∠BADand∠ADBhavemeasuresof4n,∠ACBhasameasureofn,and∠DBChasameasureof45°,whatisthe

Ifthelengthsoftwoofthesidesofatriangleare9and10,whichofthefollowingcouldbethelengthofthethirdside?Ⅰ.

Ifaandbarethelengthsofthelegsofarighttri-anglewhosehypotenuseis10andwhoseareais20,whatisthevalueof(a

Whatisthehypotenuseofarighttrianglewithabaseof9cmandanareaof54cm2?

下列变化中不属于中性粒细胞毒性变化的是

某鸡场1500只240N龄罗曼蛋鸡发病，产蛋率下降。少数鸡精神沉郁，每隔2～3天有个别鸡死亡，病死鸡皮下脂肪多，腹腔内有大量脂肪沉积，充满血样液体，肝肿大，包膜破裂、质松软易碎、有油腻感。该病最有效的治疗药物是()

根据形成苷键的原子分类，属于s-苷的是

下列楼板平面布置图中，建筑形体平面规则的是()。

下列关于货币现值和终值的说法中，正确的有()。

被称为“第二代基因工程”的是()。

[A]star[B]ticket[C]creditcard[D]piano[E]restaurant[F]beer[G]umbrella

Whendoestheplanetakeoff?WhichpartofthefactorydoesAlanwanttochange?

WorkisaveryimportantpartoflifeintheUnitedStates.WhentheearlyProtestant【1】cametothiscountry,theybroughtthe【