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Q.
The size of the wooden block is 5 x 10 x 20 cm .How many such blocks will be required to construct a solid wooden cube of minimum size?
A.
6
B.
8
C.
12
D.
16
View Answer
Correct choice: B
Explanation:
Side of smallest cube = L.C.M of 5, 10, 20 = 20cm Volume of the cube = (20 x 20 x 20)cu.cm = 8000 cu.cm Volume of the block= (5 x 10 x 20)cu.cm = 1000 cu.cm Number of blocks = (8000/1000) = 8
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