Convert $23 d m 9 c m$ into centimeters.

2.39 c m

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23.9 c m

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239 c m

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2390 c m

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Solution

The correct option is D $239 c m$
We know that, $1$ $m e t e r = 100$ $c m$ , $1$ $d e c i m e t e r = 10$ $c e n t i m e t e r$

To convert $23$ $d m$ $9$ $c m$ to $c e n t i m e t e r$
Now, $23$ $d m = 23 \times 10$ $c m$ $= 230$ $c e n t i m e t e r$

$23$ $d m$ $9$ $c m$ $= 23 d m + 9 c m$
$= 230 c m + 9 c m$
$= 239 c m$

So, Option $C$ is correct

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