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Question

Convert 38.6 metres to decametres.


A
386
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B
3.86
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C
3860
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D
0.386
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Solution

The correct option is B 3.86

To convert a smaller unit (metre) to a larger unit (decametre) we divide by the conversion factor.

we know that 10 m = 1 decameter

Therefore 38.6m = 38.6 ÷ 10

=38.610 (To divide a decimal by 10 move the decimal point 1 place to the left. )

= 3.86 decameter

Answer: option B. 3m


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