MCQ
Convert $23\ dm\ 9\ cm\ 23\ dm\ 9\ cm$ into centimeters:
- A$2.39\ cm$
- B$23.9\ cm$
- ✓$239\ cm$
- D$2390\ cm$
✓
Answer
Correct option: C.
$239\ cm$
We know that, $1$ meter $= 100\ cm, 1$ decimeter $= 10$ centimeter
To convert $23\ dm\ 9\ cm$ to centimeter
now, $23\ dm = 23 \times 10\ cm = 230$ centimeter
$23\ dm\ 9\ cm = 23\ dm + 9\ cm$
$= 230\ cm + 9\ cm$
$= 239\ cm$
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