A) 216
B) 343
C) 294
D) 264
Correct Answer: B
Solution :
A \[5\times 5\times 5\] cube has 5 cubes of \[1\times 1\times 1\] cubes along its length, breadth and width each. If we add a layer of \[1\times 1\times 1\]cubes (the smaller cubes) then the new cube will have following dimensions: length\[=5+1+1=7;\]breadth \[=5+1+1=7\]and width \[=5+1+1=7\] So the number of \[1\times 1\times 1\] cubes in this \[7\times 7\times 7\] cube \[7\times 7\times 7=343.\]You need to login to perform this action.
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