You need to know the base to answer this. but if you want i will explain it divide 62.4 by 2 which is 31.2 the you divide 31.2 by what ever the base is and that is your height
Yes, sides AC and AD are congruent and lines BC and DE are also congruent. They also share angle A and bc of the SSA congruence Theorem that means they are congruent.
