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To pack her books, Rebekka requires a cube-shaped box with a volume of
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05 Dec 2022, 02:17
05 Dec 2022, 02:17
Expert Reply
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Question Stats:
28% (00:58) correct
71% (00:52) wrong based on 7 sessions
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To pack her books, Rebekka requires a cube-shaped box with a volume of at least 2 cubic feet. Which of the following amounts could be the length of the edge of her box, in feet?
Indicate all such values.
1.1
1.2
1.3
1.4
1.5
Indicate all such values.
1.1
1.2
1.3
1.4
1.5
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Re: To pack her books, Rebekka requires a cube-shaped box with a volume of
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07 Dec 2022, 11:10
07 Dec 2022, 11:10
1
Carcass wrote:
To pack her books, Rebekka requires a cube-shaped box with a volume of at least 2 cubic feet. Which of the following amounts could be the length of the edge of her box, in feet?
Indicate all such values.
1.1
1.2
1.3
1.4
1.5
Indicate all such values.
1.1
1.2
1.3
1.4
1.5
Volume of a cube with edge length as \(a\) is \(a^3\)
We know, \(a^3 ≤ 2\)
i.e. \(a ≤ 2^{\frac{1}{3}}\)
Now, we can't find cube-root using the GRE's given on-screen calculator. What do we do?
Simply multiply each option thrice - it should be less than or equal to 2
A. (1.1)(1.1)(1.1) = 1.331
B. (1.2)(1.2)(1.2) = 1.728
C. (1.3)(1.3)(1.3) = 2.197
We don't need tosolve any further as option D and E, both will be greater than 2
Hence, option A and B
Re: To pack her books, Rebekka requires a cube-shaped box with a volume of
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09 Dec 2022, 03:15
09 Dec 2022, 03:15
Expert Reply
OE
Plug In the answers to your on-screen calculator. When cubed, choices (A) and (B) are less than 2 cubic feet. The other three choices for the edge of the box produce volumes over 2 cubic feet.
Plug In the answers to your on-screen calculator. When cubed, choices (A) and (B) are less than 2 cubic feet. The other three choices for the edge of the box produce volumes over 2 cubic feet.
