A trapezoid has one base of 8 ft, a height of 3 ft, and an area of 30 ft2. What is the length of the other base?

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问题 A trapezoid has one base of 8 ft, a height of 3 ft, and an area of 30 ft². What is the length of the other base?

选项

答案12 ft

解析 The equation for the area of a trapezoid is A = 1/2(base₁+ base₂)(height). Substitute the given variables into the equation and solve for the missing base:
30=1/2(8 + base₂)(3)
20 =(8 + base₂)
base₂ = 12 ft

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A trapezoid has one base of 8 ft, a height of 3 ft, and an area of 30 ft2. What is the length of the other base?

GRE QUANTITATIVE

GRE

Ialwaysencouragesuchpeople,butIalsoexplainthatthere’sabigdifferencebetween"beingawriter"andwriting.

Somepeoplethinkoflifeasagame.Therearesimilaritiesbetweenlifeandgames;bothcanbeplayed,bothhaverules,andbot

AsTheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair

AsTheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair

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

Inthefigureabove,segmentsrepresenttwopositionsofthesameladderleaningagainstthesideofawall.Thelengthofis

Inthefigureabove,whatistheperimeterof△PQF?(1)ThelengthofsegmentPTis2.(2)ThelengthofsegmentRSis.

Ifoneoftheanglesofaparallelogrammeasures35°,whatisthesumoftheremainingangles?

Whatisthehypotenuseofarighttrianglewithabaseof9cmandanareaof54cm2?

AustraliaisnearlyaslargeastheUnitedStates,butmostofitistoodryforpeopletolivein.Aroundthisdrypartarelar

A、单棕榈酸甘油酯B、聚乙二醇6000C、甲基纤维素D、甘油E、乙基纤维素可用于亲水性凝胶X骨架片的材料为（）

根据《银行结算办法》规定，下列结算方式中的()可用于同城结算。

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