Which statement about converting metric units of measurement is true? Use the metric table to help answer the question.

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Step-by-step explanation:

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To answer this question, we need to know first the unit conversion of each item in the choices such conversions are enumerated below:

1 centigram = 0.001 dekagrams

1 hectograms = 0.1  kilograms  

1 grams = 1000 milligrams  

1 dekagrams = 0.1 hectograms

From the choices,  the correct unit conversion is the letter "B" which is "To find the number of hectograms in 4.5 kilograms, multiply 4.5 by 10". The solution is shown below:

4.5 kilograms * (1 hectograms / 0.1 kilograms), we need to cancel both kilograms such as the remaining unit is only the hectograms

4.5 * (1 hectograms / 0.1)  where 1 divided by 0.1 is 10

4.5 * 10 hectograms

Therefore, 4.5kilograms should be multiplied by 10 in order to have hectograms as a unit.

Step-by-step explanation:

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

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step-by-step explanation: