Cache is physically tagged so used physical addresses only until specified for a virtually indexed cache.
So, physical address is 14 bits.
Lets consider the cache configuration:
3 bits - Addressing within the block
2 bits - addressing the set (as we can have 4 sets in total)
So, 9 bits - tag bits
Now, we have total 8 blocks in cche. For each block, we require 9 tag bits.
Hence, tag memory = 9*8 = 72 bits
REF: https://www.youtube.com/watch?v=3sX5obQCHNA