If the diameter of a circle is 14, then the area of the circle is

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问题 If the diameter of a circle is 14, then the area of the circle is

选项 A、7π
B、14π
C、28π
D、49π
E、196π

答案D

解析 The diameter of a circle is twice its radius, so if the diameter is 14, then the radius is 7. The formula for the area of a circle is πr2, so the area of this circle is 49π.

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If the diameter of a circle is 14, then the area of the circle is

GMAT QUANTITATIVE

GMAT

Thereportermanagedtogetintothefakecigarettesmillby______himselfasaworker.

Wehearthattheywill______anewschoolhere.

Weshallhaveanopportunitytoexchange______tomorrow.

Whenshewasbusytidyingtheroom,herlittlekidisalways______.

Longbusridesareliketelevisionshows.Theyhaveabeginning,amiddle,andanend—withcommercialsthrownineverythreeor

Forthispart,youareallowed30minutestowriteacompositiononthetopic"IsaTestofSpokenEnglishNecessary".Youshoul

ThethemeoftheInternationalLiteracyDaythisyearistheconnectionbetweenliteracyandsustainabledevelopment.Literacyh

TheCalifornialawmakersvotedThursdaytoraisethelegalagetobuytobaccoproductsfrom18to21.Themeasureispartofal

AsTheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair

Thesizeofaflat-screentelevisionisgivenasthelengthofthescreen’sdiagonal.Howmanysquareinchesgreateristhescre

男性，56岁。30分钟前心前区压榨样痛，突然出现意识丧失、抽搐，听诊心音消失，脉搏触不到，血压为零，诊断为心搏骤停。根据病理解剖发现，大部分心脏性猝死的重要病因是

急性乳腺炎常见的致病菌为

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在下列索赔事件中，承包商不能提出费用索赔的是()

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