* Convert to the same units: Since we're comparing millimeters (mm) and meters (m), let's convert them both to meters.

* There are 1000 millimeters in 1 meter. So, 350 mm is equal to 350/1000 = 0.35 meters.

* Compare: Now we have:

* 0.35 m

* 0.49 m

* Conclusion: 0.49 meters is longer than 0.35 meters.

Therefore, 0.49 m is longer than 350 mm.