How far is point A from point D ?

I.Point A is 4m to the north of point B .Point C is 3m to the east of point A. Point D is to the west of point A such that points C, A and S form a straight line of 7m

II.Point F is3m  to south of point D. Point C is 4m to the east of point A. Point A is 3m to the north of point B. Point A lies on the line formed by joining points C and D.