I WONDER - What Sort Of Dinosaur Was The Allosaurus?

The video introduces the allosaurus, a large bipedal dinosaur, explaining that bipedal means it walked on two legs. It belonged to the sauropod family, known for running on two feet. The allosaurus had three clawed toes and a smaller claw higher up on its feet. Its hind legs were long and powerful, while its arms were short and strong. The claws could reach up to 15 centimeters in length.

How did the hind legs of the allosaurus contribute to its movement?

What is the length of the allosaurus's claws?