Question

Convert 38.6 metres to decametres.

• A. 386
• B. 3.86
• C. 3860
• D. 0.386

Answer 1

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

=$\frac{38.6}{10}$ (To divide a decimal by 10 move the decimal point 1 place to the left. )

= 3.86 decameter

Answer: option B. 3m