Question

Which is most likely the length of a student’s textbook? 30 millimeters 30 centimeters 30 decimeters 30 hectometers

Answer 1

Answer:

I think 30 centimetres

Explanation:

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Answer 2

Answer:

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Explanation:

For this case, what we must do is to rewrite these measurements in the same unit in order to compare them.

By writing the measurements in meters we have:

30 mm = (30) * (\frac{1}{1000}) = 0.030 m    

30 cm = (30) * (\frac{1}{100}) = 0.30 m    

30 dm = (30) * (\frac{1}{10}) = 3 m\\30 Hm = (30) * (100) = 3000 m    

Therefore, physically the correct measure is:

0.30 m = 30 cm  

Answer:

the length of a student's textbook most likely is:

30 centimeters