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24 February, 17:31

Which of the following is not equal to 120 centimeters?

0.0012 kilometers (km)

0 0.012 dekameters (dkm)

1.2 meters (m)

1200 millimeters (mm)

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Answers (1)
  1. 24 February, 17:56
    0
    0.012 dekameters (dkm)

    Explanation:

    We are given;

    120 centimeters (cm).

    Required to identify the measurements that is not equivalent to 120 cm.

    Centimeters are units that are used to measure length together with other units such as kilometers (km), meters (m), millimeters (mm), dekameters (dkm), etc. These units can be inter-converted to one another using suitable conversion factors. To do this, we are going to have a table showing the suitable conversion factor from one unit to another.

    Kilometer (km)

    10

    Decimeter (Dm)

    10

    Hectometer (Hm) /

    10

    Meter (m)

    10

    Dekameter (dkm)

    10

    Centimeter (cm)

    10

    Millimeter (mm)

    Therefore;

    To convert cm to km

    Conversion factor is 10^5 cm/km

    Thus;

    120 cm = 120 cm : 10^5 cm/km

    = 0.0012 km

    To convert cm to dkm

    Conversion factor is 10 cm/dkm

    Therefore,

    120 cm = 120 cm : 10 cm/dkm

    = 12 dkm

    To convert cm to m

    The suitable conversion factor is 10^2 cm/m

    Thus,

    120 cm = 120 cm : 10^2 cm/m

    = 1.2 m

    To convert cm to mm

    Suitable conversion factor is 10 mm/cm

    Therefore;

    120 cm = 120 cm * 10 mm/cm

    = 1200 mm

    Therefore, the measurement that is not equal to 120 cm is 0.012 dkm
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