Problem: Which measurement is correct when using a 30-cm ruler with 0.1 cm markings? a)  10.1 cm b) -0.05 cm    c)   5.225 cmd)  3.45 cm e) 29 cm

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We’re being asked to determine the correct reading for the 30-cm rule shown below:



The markings on the ruler correspond to 0.1 cm increments. We can see that the red line is past the 3.4 cm mark.


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Problem Details

Which measurement is correct when using a 30-cm ruler with 0.1 cm markings? 

a)  10.1 cm 

b) -0.05 cm    

c)   5.225 cm

d)  3.45 cm 

e) 29 cm

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