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Q.

Find the product of the following 6km5hm3dam4m by 12.

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a

78,408

b

78,508

c

78,608

d

78,708

answer is A.

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Detailed Solution

Concept: Do the multiplication when all the terms have been converted to the same units. The, which can be changed into various prefixed units, is the accepted unit for measuring length. A tenth of the conventional unit, or ten times, is taken in each step.
This expression is given as 6km5hm3dam4m. The unit also has the prefixes of kilo, hecta, deca, deci, centi, and milli.
Currently, 1 km = 1,000 meters.
1hm=100m
1dam=10m
Using the conversion described above, the expression is reduced to,
Question Image

Question Image

When 12 is multiplied with 6534m

Hence, the correct answer is option 1.

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