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If the volume of a cube is x cubic feet and the total surface area of
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16 Aug 2022, 08:44
16 Aug 2022, 08:44
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Question Stats:
75% (01:24) correct
25% (01:44) wrong based on 12 sessions
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If the volume of a cube is x cubic feet and the total surface area of the cube is x square feet, then what is the total length of all the cube’s edges?
(A) 24
(B) 60
(C) 72
(D) 120
(E) 144
(A) 24
(B) 60
(C) 72
(D) 120
(E) 144
Part of the project: GRE QCQ & PS 3 Questions Every One DAILY Challenge - (2022)
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GRE Math Essentials (2022)
GRE Geometry Formulas
GRE - Math Book
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GRE Math Essentials (2022)
GRE Geometry Formulas
GRE - Math Book
Re: If the volume of a cube is x cubic feet and the total surface area of
[#permalink]
20 Aug 2022, 23:22
20 Aug 2022, 23:22
1
According to the question , a^3 = x and 6*(a^2) = x .
as x is common ,
a^3 = 6*(a^2)
which gives a = 6.
But the question is about total length of all edges of cube.
A cube has 12 edges .
Hence ,
12a = 12*6 = 72
Answer is C.
as x is common ,
a^3 = 6*(a^2)
which gives a = 6.
But the question is about total length of all edges of cube.
A cube has 12 edges .
Hence ,
12a = 12*6 = 72
Answer is C.
gmatclubot
Re: If the volume of a cube is x cubic feet and the total surface area of [#permalink]
20 Aug 2022, 23:22
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