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UPSC CDS Math Volume and Surface Area Questions
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© examsnet.com
Question : 12
Total: 104
Six cubes, each with 12 cm edge are joined end to end. What is the surface area of resulting cuboid ?
[2019 CDS-II]
3000
c
m
2
3600
c
m
2
3744
c
m
2
3777
c
m
2
Validate
Solution:
We have,
Six cubes with same edge
12
c
m
are joint end to end.
Then total length of big cuboid
(
L
)
=
12
×
6
=
72
c
m
and breadth
(
B
)
and height
(
H
)
is same
12
c
m
.
so, total surface area of cuboid
=
2
(
L
B
+
B
H
+
L
H
)
=
2
(
72
×
12
+
12
×
12
+
72
×
12
)
=
3744
c
m
2
© examsnet.com
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