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Byju's Answer
Standard VIII
Mathematics
Total Surface Area of a Cuboid
The edge of a...
Question
The edge of a cube is
20
cm. How many small cubes of
5
cm edge can be formed from this cube?
A
4
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B
32
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C
64
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D
100
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Solution
The correct option is
D
64
Volume of the original cube,
V
=
(
Length of it's edge
)
3
⇒
20
3
=
8000
cm
3
Volume of the small cube,
v
=
(
5
)
3
=
125
cm
3
Number of the small cubes made from original cube
=
V
v
⇒
8000
125
=
64
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