MCQ
Convert $745\ cm$ into decimeters:
  • A
    $745\ dm$
  • B
    $0\ dm\ 745\ cm$
  • C
    $7\ dm\ 45\ cm$
  • $74\ dm\ 5\ cm$

Answer

Correct option: D.
$74\ dm\ 5\ cm$

We know that, $1$ decimeter $=10\ cm,$
$1\text{cm}=\frac{1}{10}\text{dm}$
$ 745\text{cm}=\frac{1}{10}\times745\text{dm}$
$=\frac{745}{10}\text{dm}$
$= 74.5$ decimeter $= 74\ dm \ 5\ cm$

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