In the figure at the right, the legs of fight triangle ACB are diameters of the two semicircles. If AB = 4, what is the sum of t

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问题 In the figure at the right, the legs of fight triangle ACB are diameters of the two semicircles. If AB = 4, what is the sum of the areas of the semicircles?

选项 A、π
B、2π
C、4π
D、8π
E、16π

答案B

解析

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In the figure at the right, the legs of fight triangle ACB are diameters of the two semicircles. If AB = 4, what is the sum of t

GRE QUANTITATIVE

GRE

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Directions:Forthispart,youareallowed30minutestowriteacompositiononthetopic"GettingtoKnowtheWorldOutsideth

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Someexpressionshavemadeajumpfromsportseventstoeverydaylife.Onesuchexpressionisfallguy.Afallguyistheperson

WhenNicholasPavewasthreeyearsold,heateapieceofcakeataparty.Withinseconds,histhroatwasachingandhisnosewa

WhenNicholasPavewasthreeyearsold,heateapieceofcakeataparty.Withinseconds,histhroatwasachingandhisnosewa

Somepeoplethinkoflifeasagame.Therearesimilaritiesbetweenlifeandgames;bothcanbeplayed,bothhaverules,andbot

Caraccidentskillmorethanonemillionpeopleandinjureapproximately50millioneachyear.【C1】______,millionsoffishcans

Somanyrepresentatives______,theconferencehadtobeputoff.

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