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Byju's Answer
Standard IX
Mathematics
Volume of a cube
Find the surf...
Question
Find the surface area of a cube whose volume is
(i) 343 m
3
(ii) 216 dm
3
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Solution
(
i
)
Volume
of
the
given
cube
=
343
m
3
We
know
that
volume
of
a
cube
=
(
side
)
3
⇒
(
side
)
3
=
343
i
.
e
.
,
side
=
343
3
=
7
m
∴
Surface
area
of
the
cube
=
6
×
(
side
)
2
=
6
×
(
7
)
2
=
294
m
2
(
ii
)
Volume
of
the
given
cube
=
216
dm
3
We
know
that
volume
of
a
cube
=
(
side
)
3
⇒
(
side
)
3
=
216
i
.
e
.
,
side
=
216
3
=
6
dm
∴
Surface
area
of
the
cube
=
6
×
(
side
)
2
=
6
×
(
6
)
2
=
216
dm
2
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