first mirror carp

while fishing on holiday last week i caught a mirror carp now because i was on holiday i didn't take alot of tackle in fact i only had two tele rods two reels with 6lb line, and small hooks size 10's to 22's, Bait was sold on site which was fishmeal soft pellets, I went fishing one evening at about 8.30 i set one rod up with one pellet on a size 16 hook and cast it into about one and haif foot of water within about 10 mins the float went and the fish shot off it may about four or five long runs of about 30yds or more and because i only had 6lb line and a 16 hook i didn't think i would land it after about 15 mins i got it in the net(which was only 24in's) now here's my problem i only had 11lb scale's with me which were to small i took some measment's which were l=30in's g=34in's and across it's back 6in's, i would love to know how big it was and wonder if someone could tell me from the measment's even a rough size will do
THANK'S
MARTIN R