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Joined: 20 Feb 2017
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The figure here shows two wooden cubes joined to form a rectangular so
[#permalink]
01 Mar 2021, 06:30
01 Mar 2021, 06:30
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The figure above shows two wooden cubes joined to form a rectangular solid. If each cube has a surface area of 24, what is the surface area of the resulting rectangular solid?
A. 24
B. 32
C. 36
D. 40
E. 48
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The figure here shows two wooden cubes joined to form a rectangular so
[#permalink]
01 Mar 2021, 23:32
01 Mar 2021, 23:32
1
GeminiHeat wrote:
Attachment:
1.jpg
The figure above shows two wooden cubes joined to form a rectangular solid. If each cube has a surface area of 24, what is the surface area of the resulting rectangular solid?
A. 24
B. 32
C. 36
D. 40
E. 48
Since each cube has a surface area of 24
then, \(6a^2 = 24\)
i.e. \(a = 2\)
Now the dimensions of the rectangular solid would be
\(l = 4; b = 2; h = 2
\)
\(T.S.A = 2 (lb + bh + lh) = 2 (8 + 4 +8) = 40\)
Hence, option D
gmatclubot
The figure here shows two wooden cubes joined to form a rectangular so [#permalink]
01 Mar 2021, 23:32
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