A cube of edge 6 cm is painted on all sides and then cut into unit cubes. The number of unit cubes with no sides painted is
A. 0
B. 64
C. 186
D. 108
Answer: Option B
Solution (By Examveda Team)
Number of cubes with no side painted = (n - 2)3Where n is the side of the bigger cube
Required number = (6 - 2)3 = 64
This Question Belongs to Arithmetic Ability >> Mensuration 3D
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B. 4.224 cm3
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A sphere and a hemisphere have the same volume. The ratio of their curved surface area is:
A. $${2^{\frac{3}{2}}}:1$$
B. $${2^{\frac{2}{3}}}:1$$
C. $${4^{\frac{2}{3}}}:1$$
D. $${2^{\frac{1}{3}}}:1$$
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