Q.

4 cm 5mm is expressed in cm as ____cm.


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Detailed Solution

4 cm 5mm is expressed in cm as 4.5 cm.
Consider the given question,
4cm 5mm.
We know that,
1 cm = 10 mm.
Then,
1mm= 1 10 cm  
4 cm 5 mm =  4 +  5  10   cm  4 cm 5 mm = 4 + 0.5   4 cm 5 mm =4.5 cm  .
Hence, 4 cm 5 mm can be expressed in cm as 4.5 cm.
 
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