What is the area, in square inches, of a circle with a diameter equal to 12 inches?

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问题 What is the area, in square inches, of a circle with a diameter equal to 12 inches?

选项 A、144
B、36
C、12π
D、36π
E、144π

答案D

解析 The correct answer is D. A circle with diameter 12 inches has a radius of 6 inches. The area of a circle is A=πr², where r is the radius. Therefore, the area of the circle is π6² = 36π.

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What is the area, in square inches, of a circle with a diameter equal to 12 inches?

GRE QUANTITATIVE

GRE

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WehavequiteabitofinformationaboutancientEgyptianmedicine．Doctors’instructionshavebeenfoundtotellus【56】theydid

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Inmakingmarketinvestigation,oneshould______.WhichofthefollowingstatementsisNOTtrue?

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Kaywantedtopullherhairout______becauseherbusyscheduledidnotallowtimeforrelaxation.

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Danhasamembershipatalocalgymthatalsogivesclassesthreenightsaweek.Onanygivenclassnight,Danhastheoptionof

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