Can someone give me the answer for this one

Find the solutions for a triangle with a =16, c =12, and b = 63º

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv