How big was a giganotosaurus?

Tyrannosaurus was the 3rd biggest predator on land after Spinosaurus 1st and Giganotosaurus 2nd. I had teeth up to 1 foot long but usually it has teeth around 15 to 20cm and had a bite force of 3 to 10 tonnes 10 tons. It had a brain about half the size of ours which was a very smart hunter but not as clever as the raptors.It usually grows to 12 to 14m but it may have grown to 16m possibly 18m. 40 feet - 12m 14m - 46 feet 16m - 52 feet 18m - 60 feet.