Calculating distance of galaxy from Milkyway

[University]

A galaxy is observed to have a significant redshift in all of its spectral lines. The line normally seen at a wavelength of 327 nm is instead observed at 360 nm. How far is this galaxy from the milkyway

My approach


All I can calculate here is the red shift based on the formula

Z= observe wavelength- emitted/ emitted


Z= 360-327/327
=0.101

This has nothing to do with distance or does it?

 

[Borek]

Hubble.