Physics

1 kilometer is ____ decimeter.


ANSWER

$$10^{4}$$


SOLUTION
$$1$$ kilometer $$=10^3$$ meter and $$1$$ decimeter $$=10^{-1}$$ meter
So, $$10$$ decimeter $$=1$$ meter
Thus, $$10^3 $$ meter $$=10^3\times 10$$ decimeter $$=10^4$$ decimeter
or, $$1$$ kilometer $$=10^4$$ decimeter
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