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

admin2011-03-08 54

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

选项

答案 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=2πr 14=2r r=7 Now substitute r into the equation for area: Area=π(72) Area=49π

解析

转载请注明原文地址:https://kaotiyun.com/show/CxkO777K

本试题收录于： GRE QUANTITATIVE题库GRE分类

GRE QUANTITATIVE

GRE

相关试题推荐

Traditionally,universitieshavecarriedouttwomainactivities;researchandteaching.Manyexpertswouldarguethatboththes
Computertechnologyisadvancingsofastthatoldhardwarequicklybecomescompletelyobsolete.Theelectronicwaster(e-waste)
The______goalofthebookistohelpbridgethegapbetweenresearchandteaching,particularlythegapbetweenresearchersand
Heneverwrotetohisfather______hewasinneedofmoney.
Newspapersarenotnearlyaspopulartodayastheywereinthepast.Therearenotverymanypeoplewhoseriouslyreadanewspap
Duringthemiddleofthe19thcentury,【T1】Germany,alongwithotherEuropeannations,sufferedfromworkplacedeathsandaccide
WehavequiteabitofinformationaboutancientEgyptianmedicine．Doctors’instructionshavebeenfoundtotellus【56】theydid
Therearemanyolderpeopleintheworldandtherewillbemanymore.Alittle-knownfactisthatover60percentoftheolderp
Alltheusefulenergyatthesurfaceoftheearthcomesfromtheactivityofthesun.Thesunheatsandfeedscreaturesandmank
Inarightisoscelestriangle,thelengthsofthetwononhypotenusesidesaredesignateda.Whatistheareaofthetrianglein

随机试题

学习策略是指学习者为了提高学习的______有目的有意识地制定的有关学习过程的复杂的方案。
著名油画作品《塔希提少女》是______的代表作之一。()A．凡·高B．高更C．伦勃朗D．毕加索
某病人诊断为吸入性肺脓肿，经足量多种抗生素治疗4个月。仍有发热，咳脓痰。胸片示空洞壁增厚，周围有明显纤维条索影。进一步治疗应选择
余某，32岁，素性多郁，复为情志所伤，致月经紊乱，经量或多或少，乳房胀痛不适，嗳气食少，苔薄，脉弦，辨证属肝郁。宜采用()
女性，45岁，偶然发现左乳房肿块，直径约2cm，质较硬，无压痛，与皮肤有少许粘连。左侧腋下可扪及1cm大小肿大的淋巴结。该患者最可能的诊断是
对于财务报表审计业务，在决定是否信赖以前审计获取的有关控制运行有效性的审计证据时，下列各项中，注册会计师通常无需考虑的是()。(2019年)
西周时期“以财货相告”称为()
Accordingtothepassage,howmanyuniversitiesintheUnitedStatestookpartinthestudy?
Whatdidthewomanthinkatfirst?
Whenaconsumerfindsthatanitemsheorheboughtisfaultyordoesnot【B1】______themanufacturer’sclaimforit,thefirstst

最新回复(0)

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

GRE QUANTITATIVE

GRE

Traditionally,universitieshavecarriedouttwomainactivities;researchandteaching.Manyexpertswouldarguethatboththes

Computertechnologyisadvancingsofastthatoldhardwarequicklybecomescompletelyobsolete.Theelectronicwaster(e-waste)

The______goalofthebookistohelpbridgethegapbetweenresearchandteaching,particularlythegapbetweenresearchersand

Heneverwrotetohisfather______hewasinneedofmoney.

Newspapersarenotnearlyaspopulartodayastheywereinthepast.Therearenotverymanypeoplewhoseriouslyreadanewspap

Duringthemiddleofthe19thcentury,【T1】Germany,alongwithotherEuropeannations,sufferedfromworkplacedeathsandaccide

WehavequiteabitofinformationaboutancientEgyptianmedicine．Doctors’instructionshavebeenfoundtotellus【56】theydid

Therearemanyolderpeopleintheworldandtherewillbemanymore.Alittle-knownfactisthatover60percentoftheolderp

Alltheusefulenergyatthesurfaceoftheearthcomesfromtheactivityofthesun.Thesunheatsandfeedscreaturesandmank

Inarightisoscelestriangle,thelengthsofthetwononhypotenusesidesaredesignateda.Whatistheareaofthetrianglein

学习策略是指学习者为了提高学习的______有目的有意识地制定的有关学习过程的复杂的方案。

著名油画作品《塔希提少女》是______的代表作之一。()A．凡·高B．高更C．伦勃朗D．毕加索

某病人诊断为吸入性肺脓肿，经足量多种抗生素治疗4个月。仍有发热，咳脓痰。胸片示空洞壁增厚，周围有明显纤维条索影。进一步治疗应选择

余某，32岁，素性多郁，复为情志所伤，致月经紊乱，经量或多或少，乳房胀痛不适，嗳气食少，苔薄，脉弦，辨证属肝郁。宜采用()

女性，45岁，偶然发现左乳房肿块，直径约2cm，质较硬，无压痛，与皮肤有少许粘连。左侧腋下可扪及1cm大小肿大的淋巴结。该患者最可能的诊断是

对于财务报表审计业务，在决定是否信赖以前审计获取的有关控制运行有效性的审计证据时，下列各项中，注册会计师通常无需考虑的是()。(2019年)

西周时期“以财货相告”称为()

Accordingtothepassage,howmanyuniversitiesintheUnitedStatestookpartinthestudy?

Whatdidthewomanthinkatfirst?

Whenaconsumerfindsthatanitemsheorheboughtisfaultyordoesnot【B1】______themanufacturer’sclaimforit,thefirstst