(a) The length of Ramesh's notebook is $ 9 \mathrm{~cm} 5 \mathrm{~mm} $. What will be its length in $ \mathrm{cm} $?
(b) The length of a young gram plant is $ 65 \mathrm{~mm} $. Express its length in $ \mathrm{cm} $.

AcademicMathematicsNCERTClass 6

To do:

We have to find their length in \( \mathrm{cm} \).

Solution:

We know that,

$1\ cm=10\ mm$

This implies,

$1\ mm=\frac{1}{10}\ cm=0.1\ cm$

(a) $5\ mm=5\times0.1\ cm$

$=0.5\ cm$

Therefore,

The length of Ramesh's notebook $=9\ cm+0.5\ cm$

$=(9+0.5)\ cm$

$=9.5\ cm$

The length of Ramesh's notebook in \( \mathrm{cm} \) is $9.5\ cm$.

(b) $65\ mm=65\times0.1\ cm$

$=6.5\ cm$

Therefore,

The length of the young gram plant $=65\ mm$

$=6.5\ cm$

The length of the young gram plant in \( \mathrm{cm} \) is $6.5\ cm$.

raja
Updated on 10-Oct-2022 13:33:20

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