i have first class in my final year engineering, however my aggregate BE percentage is 57.45, am i eligible i am roman catholic

You need to have 60%

The prospective candidate must be a graduate in any discipline from a recognized university in India (AIU) with a first class or a minimum average of 60% in Standards X, XII and on graduation.

Minimum requirement in 10th 12th and ug is 60%. LIBA is generally strict about the 60+ rule. although 59 point something is sometimes called for if they have a high cat/xat score.