which measure is not equivalent to the others?

0.0048km, 4800mm, 48cm, 4.8 meters

I believe the answer is 48cm. It should actually be 480cm correct?

Right. :-)

48 cm is correct

To determine which measure is not equivalent to the others, we need to convert all the values to a consistent unit of measurement. In this case, we can convert all the values to meters for easier comparison.

Given:

0.0048 km = 0.0048 * 1000 meters = 4.8 meters (since 1 km = 1000 m)
4800 mm = 4800 / 1000 meters = 4.8 meters (since 1 meter = 1000 mm)
48 cm = 48 / 100 meters = 0.48 meters (since 1 meter = 100 cm)
4.8 meters = 4.8 meters

Now we have all the values in meters:

0.0048 meters, 4.8 meters, 0.48 meters, 4.8 meters

From this, we can see that all the measures are equivalent to 4.8 meters, except for 0.48 meters. Therefore, the measure that is not equivalent to the others is 0.48 meters.

So, your initial answer is correct. 48 cm should indeed be 480 cm to be equivalent to the other measures.